How do I clear and change background colour of a canvas?
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0
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Background colour has to be changed with the colour I'm drawing with.
So if i'm drawing with the colour red on the canvas I want to click the clear button and the canvas div will clear all the drawings and change the background colour to red.
Here is what I have so far but I don't know how to change the colour to the one I have selected
function ClearCanvas(sColour) {
DebugMessage("Clear Canvas");
const context = oCanvas.getContext('2d');
context.clearRect(0, 0, oCanvas.width, oCanvas.height);
document.getElementById("1Canvas").style.background = "____";
}
javascript html css
asked Nov 11 at 18:41
JellyFishGame
1
add a comment |
up vote
0
down vote
favorite
Background colour has to be changed with the colour I'm drawing with.
So if i'm drawing with the colour red on the canvas I want to click the clear button and the canvas div will clear all the drawings and change the background colour to red.
Here is what I have so far but I don't know how to change the colour to the one I have selected
function ClearCanvas(sColour) {
DebugMessage("Clear Canvas");
const context = oCanvas.getContext('2d');
context.clearRect(0, 0, oCanvas.width, oCanvas.height);
document.getElementById("1Canvas").style.background = "____";
}
javascript html css
asked Nov 11 at 18:41
JellyFishGame
1
Possible duplicate of How to fill the whole canvas with specific color
– Rafael
Nov 11 at 18:55
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
Background colour has to be changed with the colour I'm drawing with.
So if i'm drawing with the colour red on the canvas I want to click the clear button and the canvas div will clear all the drawings and change the background colour to red.
Here is what I have so far but I don't know how to change the colour to the one I have selected
function ClearCanvas(sColour) {
DebugMessage("Clear Canvas");
const context = oCanvas.getContext('2d');
context.clearRect(0, 0, oCanvas.width, oCanvas.height);
document.getElementById("1Canvas").style.background = "____";
}
javascript html css
asked Nov 11 at 18:41
JellyFishGame
1
Background colour has to be changed with the colour I'm drawing with.
So if i'm drawing with the colour red on the canvas I want to click the clear button and the canvas div will clear all the drawings and change the background colour to red.
Here is what I have so far but I don't know how to change the colour to the one I have selected
function ClearCanvas(sColour) {
DebugMessage("Clear Canvas");
const context = oCanvas.getContext('2d');
context.clearRect(0, 0, oCanvas.width, oCanvas.height);
document.getElementById("1Canvas").style.background = "____";
}
javascript html css
javascript html css
asked Nov 11 at 18:41
JellyFishGame
1
asked Nov 11 at 18:41
JellyFishGame
1
asked Nov 11 at 18:41
JellyFishGame
1
asked Nov 11 at 18:41
JellyFishGame
1
asked Nov 11 at 18:41
JellyFishGame
1
1
Possible duplicate of How to fill the whole canvas with specific color
– Rafael
Nov 11 at 18:55
add a comment |
Possible duplicate of How to fill the whole canvas with specific color
– Rafael
Nov 11 at 18:55
Possible duplicate of How to fill the whole canvas with specific color
– Rafael
Nov 11 at 18:55
Possible duplicate of How to fill the whole canvas with specific color
– Rafael
Nov 11 at 18:55
add a comment |
1 Answer
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votes
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0
down vote
When you draw a color on the canvas, you need to change the fillStyle to the color you wish. Changing the background-color of a canvas won't work.
const canvas = document.getElementById("canvas");
const ctx = canvas.getContext("2d");
const colors = ["blue", "green", "red", "pink", "purple", "grey", "black"];
function draw(color) {
//This line is actually not even needed...
ctx.clearRect(0, 0, canvas.width, canvas.height);
ctx.rect(0, 0, canvas.width, canvas.height);
ctx.fillStyle = color;
ctx.fill();
}
let i = 0;
setInterval(() => {
draw(colors[i]);
i = (i + 1) % colors.length;
}, 1000);<canvas id="canvas">answered Nov 11 at 18:57
kemicofa
8,06043478
add a comment |
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1 Answer
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1 Answer
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up vote
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When you draw a color on the canvas, you need to change the fillStyle to the color you wish. Changing the background-color of a canvas won't work.
const canvas = document.getElementById("canvas");
const ctx = canvas.getContext("2d");
const colors = ["blue", "green", "red", "pink", "purple", "grey", "black"];
function draw(color) {
//This line is actually not even needed...
ctx.clearRect(0, 0, canvas.width, canvas.height);
ctx.rect(0, 0, canvas.width, canvas.height);
ctx.fillStyle = color;
ctx.fill();
}
let i = 0;
setInterval(() => {
draw(colors[i]);
i = (i + 1) % colors.length;
}, 1000);<canvas id="canvas">answered Nov 11 at 18:57
kemicofa
8,06043478
add a comment |
up vote
0
down vote
When you draw a color on the canvas, you need to change the fillStyle to the color you wish. Changing the background-color of a canvas won't work.
const canvas = document.getElementById("canvas");
const ctx = canvas.getContext("2d");
const colors = ["blue", "green", "red", "pink", "purple", "grey", "black"];
function draw(color) {
//This line is actually not even needed...
ctx.clearRect(0, 0, canvas.width, canvas.height);
ctx.rect(0, 0, canvas.width, canvas.height);
ctx.fillStyle = color;
ctx.fill();
}
let i = 0;
setInterval(() => {
draw(colors[i]);
i = (i + 1) % colors.length;
}, 1000);<canvas id="canvas">answered Nov 11 at 18:57
kemicofa
8,06043478
add a comment |
up vote
0
down vote
up vote
0
down vote
When you draw a color on the canvas, you need to change the fillStyle to the color you wish. Changing the background-color of a canvas won't work.
const canvas = document.getElementById("canvas");
const ctx = canvas.getContext("2d");
const colors = ["blue", "green", "red", "pink", "purple", "grey", "black"];
function draw(color) {
//This line is actually not even needed...
ctx.clearRect(0, 0, canvas.width, canvas.height);
ctx.rect(0, 0, canvas.width, canvas.height);
ctx.fillStyle = color;
ctx.fill();
}
let i = 0;
setInterval(() => {
draw(colors[i]);
i = (i + 1) % colors.length;
}, 1000);<canvas id="canvas">answered Nov 11 at 18:57
kemicofa
8,06043478
When you draw a color on the canvas, you need to change the fillStyle to the color you wish. Changing the background-color of a canvas won't work.
const canvas = document.getElementById("canvas");
const ctx = canvas.getContext("2d");
const colors = ["blue", "green", "red", "pink", "purple", "grey", "black"];
function draw(color) {
//This line is actually not even needed...
ctx.clearRect(0, 0, canvas.width, canvas.height);
ctx.rect(0, 0, canvas.width, canvas.height);
ctx.fillStyle = color;
ctx.fill();
}
let i = 0;
setInterval(() => {
draw(colors[i]);
i = (i + 1) % colors.length;
}, 1000);<canvas id="canvas">const canvas = document.getElementById("canvas");
const ctx = canvas.getContext("2d");
const colors = ["blue", "green", "red", "pink", "purple", "grey", "black"];
function draw(color) {
//This line is actually not even needed...
ctx.clearRect(0, 0, canvas.width, canvas.height);
ctx.rect(0, 0, canvas.width, canvas.height);
ctx.fillStyle = color;
ctx.fill();
}
let i = 0;
setInterval(() => {
draw(colors[i]);
i = (i + 1) % colors.length;
}, 1000);<canvas id="canvas">const canvas = document.getElementById("canvas");
const ctx = canvas.getContext("2d");
const colors = ["blue", "green", "red", "pink", "purple", "grey", "black"];
function draw(color) {
//This line is actually not even needed...
ctx.clearRect(0, 0, canvas.width, canvas.height);
ctx.rect(0, 0, canvas.width, canvas.height);
ctx.fillStyle = color;
ctx.fill();
}
let i = 0;
setInterval(() => {
draw(colors[i]);
i = (i + 1) % colors.length;
}, 1000);<canvas id="canvas">answered Nov 11 at 18:57
kemicofa
8,06043478
answered Nov 11 at 18:57
kemicofa
8,06043478
answered Nov 11 at 18:57
kemicofa
8,06043478
answered Nov 11 at 18:57
kemicofa
8,06043478
8,06043478
add a comment |
add a comment |
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Possible duplicate of How to fill the whole canvas with specific color
– Rafael
Nov 11 at 18:55