Reduce Array based on properties of 2 keys
0
I have an array like this.
var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}]
I need to get an array like this:
var newData = [{
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}]
That is get the highest value for each 'name' key in an array.
This is what I have tried:
var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}]
console.log(data.reduce(function(prev, current) {
return (prev.name !== current.name && prev.value > current.value) ? prev : current
}))Please advice.
javascript arrays object
asked Nov 14 '18 at 3:41
a2441918a2441918
635213
add a comment |
0
I have an array like this.
var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}]
I need to get an array like this:
var newData = [{
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}]
That is get the highest value for each 'name' key in an array.
This is what I have tried:
var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}]
console.log(data.reduce(function(prev, current) {
return (prev.name !== current.name && prev.value > current.value) ? prev : current
}))Please advice.
javascript arrays object
asked Nov 14 '18 at 3:41
a2441918a2441918
635213
add a comment |
0
0
0
I have an array like this.
var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}]
I need to get an array like this:
var newData = [{
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}]
That is get the highest value for each 'name' key in an array.
This is what I have tried:
var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}]
console.log(data.reduce(function(prev, current) {
return (prev.name !== current.name && prev.value > current.value) ? prev : current
}))Please advice.
javascript arrays object
asked Nov 14 '18 at 3:41
a2441918a2441918
635213
I have an array like this.
var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}]
I need to get an array like this:
var newData = [{
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}]
That is get the highest value for each 'name' key in an array.
This is what I have tried:
var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}]
console.log(data.reduce(function(prev, current) {
return (prev.name !== current.name && prev.value > current.value) ? prev : current
}))Please advice.
var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}]
console.log(data.reduce(function(prev, current) {
return (prev.name !== current.name && prev.value > current.value) ? prev : current
}))var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}]
console.log(data.reduce(function(prev, current) {
return (prev.name !== current.name && prev.value > current.value) ? prev : current
}))javascript arrays object
javascript arrays object
asked Nov 14 '18 at 3:41
a2441918a2441918
635213
asked Nov 14 '18 at 3:41
a2441918a2441918
635213
asked Nov 14 '18 at 3:41
a2441918a2441918
635213
asked Nov 14 '18 at 3:41
a2441918a2441918
635213
asked Nov 14 '18 at 3:41
a2441918a2441918
635213
635213
add a comment |
add a comment |
4 Answers
4
active
oldest
votes
4
You need to keep track of the current highest value items for every name, so you could try reducing into an object, whose keys are the names, and values are the currently winning values for that name. Then, get the resulting object's values:
var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}];
console.log(Object.values(
data.reduce((a, item) => {
const { name, value } = item;
if (!a[name] || a[name].value < value) a[name] = item;
return a;
}, {})
));(Your prev.name !== current.name ... method would only work if you're only trying to get one item out of it in the end - because you need more, you need an object that can contain multiple items.)
answered Nov 14 '18 at 3:44
CertainPerformanceCertainPerformance
84.9k154169
add a comment |
0
Use reduce and check if the accumulator array has the same fruit using findIndex . If it is -1 , then in accumulator array push the value else update the count in that index
var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}]
let result = data.reduce(function(acc, curr) {
let findIfExist = acc.findIndex(elem => {
return elem.name === curr.name;
})
if (findIfExist === -1) {
acc.push(curr)
} else {
if (acc[findIfExist].value < curr.value) {
acc[findIfExist].value = curr.value
}
}
return acc;
}, )
console.log(result)answered Nov 14 '18 at 3:47
brkbrk
26.5k32040
add a comment |
0
Use forEach instead of reduce
var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}]
let result = {};
data.forEach(function(current) {
if (result[current.name] &&
result[current.name].value < current.value &&
result[current.name].category === current.category) {
result[current.name].value = current.value;
} else if (!result[current.name]) {
result[current.name] = current;
}
});
console.log(Object.values(result));answered Nov 14 '18 at 3:51
RameshRamesh
9,94623777
is there any reason to use forEach instead of reduce ?
– brk
Nov 14 '18 at 3:54
@brk No specific reason.. CertainPerformance answer looks great as well..
– Ramesh
Nov 14 '18 at 4:22
add a comment |
0
var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}]
let result=data.reduce(function(temp, current) {
//check if temp has object
var found = temp.some((el) => {
return el.name === current.name
});
//if not found, add the object
if (!found) { temp.push(current) }
//if found and value is greater, replace the max value
else{
temp.find((element) => {
if(element.name === current.name && element.value<current.value)
element.value=current.value
})
}
return temp
},)
console.log(result);answered Nov 14 '18 at 11:45
Monica AchaMonica Acha
33219
add a comment |
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4 Answers
4
active
oldest
votes
4 Answers
4
active
oldest
votes
active
oldest
votes
active
oldest
votes
4
You need to keep track of the current highest value items for every name, so you could try reducing into an object, whose keys are the names, and values are the currently winning values for that name. Then, get the resulting object's values:
var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}];
console.log(Object.values(
data.reduce((a, item) => {
const { name, value } = item;
if (!a[name] || a[name].value < value) a[name] = item;
return a;
}, {})
));(Your prev.name !== current.name ... method would only work if you're only trying to get one item out of it in the end - because you need more, you need an object that can contain multiple items.)
answered Nov 14 '18 at 3:44
CertainPerformanceCertainPerformance
84.9k154169
add a comment |
4
You need to keep track of the current highest value items for every name, so you could try reducing into an object, whose keys are the names, and values are the currently winning values for that name. Then, get the resulting object's values:
var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}];
console.log(Object.values(
data.reduce((a, item) => {
const { name, value } = item;
if (!a[name] || a[name].value < value) a[name] = item;
return a;
}, {})
));(Your prev.name !== current.name ... method would only work if you're only trying to get one item out of it in the end - because you need more, you need an object that can contain multiple items.)
answered Nov 14 '18 at 3:44
CertainPerformanceCertainPerformance
84.9k154169
add a comment |
4
4
4
You need to keep track of the current highest value items for every name, so you could try reducing into an object, whose keys are the names, and values are the currently winning values for that name. Then, get the resulting object's values:
var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}];
console.log(Object.values(
data.reduce((a, item) => {
const { name, value } = item;
if (!a[name] || a[name].value < value) a[name] = item;
return a;
}, {})
));(Your prev.name !== current.name ... method would only work if you're only trying to get one item out of it in the end - because you need more, you need an object that can contain multiple items.)
answered Nov 14 '18 at 3:44
CertainPerformanceCertainPerformance
84.9k154169
You need to keep track of the current highest value items for every name, so you could try reducing into an object, whose keys are the names, and values are the currently winning values for that name. Then, get the resulting object's values:
var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}];
console.log(Object.values(
data.reduce((a, item) => {
const { name, value } = item;
if (!a[name] || a[name].value < value) a[name] = item;
return a;
}, {})
));(Your prev.name !== current.name ... method would only work if you're only trying to get one item out of it in the end - because you need more, you need an object that can contain multiple items.)
var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}];
console.log(Object.values(
data.reduce((a, item) => {
const { name, value } = item;
if (!a[name] || a[name].value < value) a[name] = item;
return a;
}, {})
));var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}];
console.log(Object.values(
data.reduce((a, item) => {
const { name, value } = item;
if (!a[name] || a[name].value < value) a[name] = item;
return a;
}, {})
));answered Nov 14 '18 at 3:44
CertainPerformanceCertainPerformance
84.9k154169
edited Nov 14 '18 at 3:45
answered Nov 14 '18 at 3:44
CertainPerformanceCertainPerformance
84.9k154169
answered Nov 14 '18 at 3:44
CertainPerformanceCertainPerformance
84.9k154169
answered Nov 14 '18 at 3:44
CertainPerformanceCertainPerformance
84.9k154169
84.9k154169
add a comment |
add a comment |
0
Use reduce and check if the accumulator array has the same fruit using findIndex . If it is -1 , then in accumulator array push the value else update the count in that index
var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}]
let result = data.reduce(function(acc, curr) {
let findIfExist = acc.findIndex(elem => {
return elem.name === curr.name;
})
if (findIfExist === -1) {
acc.push(curr)
} else {
if (acc[findIfExist].value < curr.value) {
acc[findIfExist].value = curr.value
}
}
return acc;
}, )
console.log(result)answered Nov 14 '18 at 3:47
brkbrk
26.5k32040
add a comment |
0
Use reduce and check if the accumulator array has the same fruit using findIndex . If it is -1 , then in accumulator array push the value else update the count in that index
var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}]
let result = data.reduce(function(acc, curr) {
let findIfExist = acc.findIndex(elem => {
return elem.name === curr.name;
})
if (findIfExist === -1) {
acc.push(curr)
} else {
if (acc[findIfExist].value < curr.value) {
acc[findIfExist].value = curr.value
}
}
return acc;
}, )
console.log(result)answered Nov 14 '18 at 3:47
brkbrk
26.5k32040
add a comment |
0
0
0
Use reduce and check if the accumulator array has the same fruit using findIndex . If it is -1 , then in accumulator array push the value else update the count in that index
var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}]
let result = data.reduce(function(acc, curr) {
let findIfExist = acc.findIndex(elem => {
return elem.name === curr.name;
})
if (findIfExist === -1) {
acc.push(curr)
} else {
if (acc[findIfExist].value < curr.value) {
acc[findIfExist].value = curr.value
}
}
return acc;
}, )
console.log(result)answered Nov 14 '18 at 3:47
brkbrk
26.5k32040
Use reduce and check if the accumulator array has the same fruit using findIndex . If it is -1 , then in accumulator array push the value else update the count in that index
var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}]
let result = data.reduce(function(acc, curr) {
let findIfExist = acc.findIndex(elem => {
return elem.name === curr.name;
})
if (findIfExist === -1) {
acc.push(curr)
} else {
if (acc[findIfExist].value < curr.value) {
acc[findIfExist].value = curr.value
}
}
return acc;
}, )
console.log(result)var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}]
let result = data.reduce(function(acc, curr) {
let findIfExist = acc.findIndex(elem => {
return elem.name === curr.name;
})
if (findIfExist === -1) {
acc.push(curr)
} else {
if (acc[findIfExist].value < curr.value) {
acc[findIfExist].value = curr.value
}
}
return acc;
}, )
console.log(result)var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}]
let result = data.reduce(function(acc, curr) {
let findIfExist = acc.findIndex(elem => {
return elem.name === curr.name;
})
if (findIfExist === -1) {
acc.push(curr)
} else {
if (acc[findIfExist].value < curr.value) {
acc[findIfExist].value = curr.value
}
}
return acc;
}, )
console.log(result)answered Nov 14 '18 at 3:47
brkbrk
26.5k32040
answered Nov 14 '18 at 3:47
brkbrk
26.5k32040
answered Nov 14 '18 at 3:47
brkbrk
26.5k32040
answered Nov 14 '18 at 3:47
brkbrk
26.5k32040
26.5k32040
add a comment |
add a comment |
0
Use forEach instead of reduce
var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}]
let result = {};
data.forEach(function(current) {
if (result[current.name] &&
result[current.name].value < current.value &&
result[current.name].category === current.category) {
result[current.name].value = current.value;
} else if (!result[current.name]) {
result[current.name] = current;
}
});
console.log(Object.values(result));answered Nov 14 '18 at 3:51
RameshRamesh
9,94623777
is there any reason to use forEach instead of reduce ?
– brk
Nov 14 '18 at 3:54
@brk No specific reason.. CertainPerformance answer looks great as well..
– Ramesh
Nov 14 '18 at 4:22
add a comment |
0
Use forEach instead of reduce
var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}]
let result = {};
data.forEach(function(current) {
if (result[current.name] &&
result[current.name].value < current.value &&
result[current.name].category === current.category) {
result[current.name].value = current.value;
} else if (!result[current.name]) {
result[current.name] = current;
}
});
console.log(Object.values(result));answered Nov 14 '18 at 3:51
RameshRamesh
9,94623777
is there any reason to use forEach instead of reduce ?
– brk
Nov 14 '18 at 3:54
@brk No specific reason.. CertainPerformance answer looks great as well..
– Ramesh
Nov 14 '18 at 4:22
add a comment |
0
0
0
Use forEach instead of reduce
var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}]
let result = {};
data.forEach(function(current) {
if (result[current.name] &&
result[current.name].value < current.value &&
result[current.name].category === current.category) {
result[current.name].value = current.value;
} else if (!result[current.name]) {
result[current.name] = current;
}
});
console.log(Object.values(result));answered Nov 14 '18 at 3:51
RameshRamesh
9,94623777
Use forEach instead of reduce
var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}]
let result = {};
data.forEach(function(current) {
if (result[current.name] &&
result[current.name].value < current.value &&
result[current.name].category === current.category) {
result[current.name].value = current.value;
} else if (!result[current.name]) {
result[current.name] = current;
}
});
console.log(Object.values(result));var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}]
let result = {};
data.forEach(function(current) {
if (result[current.name] &&
result[current.name].value < current.value &&
result[current.name].category === current.category) {
result[current.name].value = current.value;
} else if (!result[current.name]) {
result[current.name] = current;
}
});
console.log(Object.values(result));var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}]
let result = {};
data.forEach(function(current) {
if (result[current.name] &&
result[current.name].value < current.value &&
result[current.name].category === current.category) {
result[current.name].value = current.value;
} else if (!result[current.name]) {
result[current.name] = current;
}
});
console.log(Object.values(result));answered Nov 14 '18 at 3:51
RameshRamesh
9,94623777
edited Nov 14 '18 at 4:20
answered Nov 14 '18 at 3:51
RameshRamesh
9,94623777
answered Nov 14 '18 at 3:51
RameshRamesh
9,94623777
answered Nov 14 '18 at 3:51
RameshRamesh
9,94623777
9,94623777
is there any reason to use forEach instead of reduce ?
– brk
Nov 14 '18 at 3:54
@brk No specific reason.. CertainPerformance answer looks great as well..
– Ramesh
Nov 14 '18 at 4:22
add a comment |
is there any reason to use forEach instead of reduce ?
– brk
Nov 14 '18 at 3:54
@brk No specific reason.. CertainPerformance answer looks great as well..
– Ramesh
Nov 14 '18 at 4:22
is there any reason to use forEach instead of reduce ?
– brk
Nov 14 '18 at 3:54
is there any reason to use forEach instead of reduce ?
– brk
Nov 14 '18 at 3:54
@brk No specific reason.. CertainPerformance answer looks great as well..
– Ramesh
Nov 14 '18 at 4:22
@brk No specific reason.. CertainPerformance answer looks great as well..
– Ramesh
Nov 14 '18 at 4:22
add a comment |
0
var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}]
let result=data.reduce(function(temp, current) {
//check if temp has object
var found = temp.some((el) => {
return el.name === current.name
});
//if not found, add the object
if (!found) { temp.push(current) }
//if found and value is greater, replace the max value
else{
temp.find((element) => {
if(element.name === current.name && element.value<current.value)
element.value=current.value
})
}
return temp
},)
console.log(result);answered Nov 14 '18 at 11:45
Monica AchaMonica Acha
33219
add a comment |
0
var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}]
let result=data.reduce(function(temp, current) {
//check if temp has object
var found = temp.some((el) => {
return el.name === current.name
});
//if not found, add the object
if (!found) { temp.push(current) }
//if found and value is greater, replace the max value
else{
temp.find((element) => {
if(element.name === current.name && element.value<current.value)
element.value=current.value
})
}
return temp
},)
console.log(result);answered Nov 14 '18 at 11:45
Monica AchaMonica Acha
33219
add a comment |
0
0
0
var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}]
let result=data.reduce(function(temp, current) {
//check if temp has object
var found = temp.some((el) => {
return el.name === current.name
});
//if not found, add the object
if (!found) { temp.push(current) }
//if found and value is greater, replace the max value
else{
temp.find((element) => {
if(element.name === current.name && element.value<current.value)
element.value=current.value
})
}
return temp
},)
console.log(result);answered Nov 14 '18 at 11:45
Monica AchaMonica Acha
33219
var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}]
let result=data.reduce(function(temp, current) {
//check if temp has object
var found = temp.some((el) => {
return el.name === current.name
});
//if not found, add the object
if (!found) { temp.push(current) }
//if found and value is greater, replace the max value
else{
temp.find((element) => {
if(element.name === current.name && element.value<current.value)
element.value=current.value
})
}
return temp
},)
console.log(result);var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}]
let result=data.reduce(function(temp, current) {
//check if temp has object
var found = temp.some((el) => {
return el.name === current.name
});
//if not found, add the object
if (!found) { temp.push(current) }
//if found and value is greater, replace the max value
else{
temp.find((element) => {
if(element.name === current.name && element.value<current.value)
element.value=current.value
})
}
return temp
},)
console.log(result);var data = [{
name: 'Apple',
category: 'Fruit',
value: 12
}, {
name: 'Apple',
category: 'Fruit',
value: 20
}, {
name: 'Orange',
category: 'Fruit',
value: 65
}, {
name: 'Orange',
category: 'Fruit',
value: 40
}]
let result=data.reduce(function(temp, current) {
//check if temp has object
var found = temp.some((el) => {
return el.name === current.name
});
//if not found, add the object
if (!found) { temp.push(current) }
//if found and value is greater, replace the max value
else{
temp.find((element) => {
if(element.name === current.name && element.value<current.value)
element.value=current.value
})
}
return temp
},)
console.log(result);answered Nov 14 '18 at 11:45
Monica AchaMonica Acha
33219
edited Nov 14 '18 at 12:16
answered Nov 14 '18 at 11:45
Monica AchaMonica Acha
33219
answered Nov 14 '18 at 11:45
Monica AchaMonica Acha
33219
answered Nov 14 '18 at 11:45
Monica AchaMonica Acha
33219
33219
add a comment |
add a comment |
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