[英]Javascript Clear Canvas
I have a button to clear the drawings of my canvas element as follows: 我有一个按钮来清除我的canvas元素的图形,如下所示:
<button id="button_clear" onclick="clear()" > Clear ! </button>
<canvas id="myCanvas" width="300" height="300" style="border:1px solid #d3d3d3;">
Clear function is like that : 清除功能是这样的:
function clear(){
var c = document.getElementById("myCanvas");
var ctx = c.getContext("2d");
ctx.clearRect(0, 0, c.width, c.height);
ctx.beginPath();
}
However when I click on the clear button, my function does not do anything at all. 但是当我点击清除按钮时,我的功能根本没有做任何事情。
Try to avoid using function names something like click()
, clear()
, ... Change your function name and check if it works. 尽量避免使用函数名称,如click()
, clear()
,...更改函数名称并检查它是否有效。 Check this answer for more detail information https://stackoverflow.com/a/5454341/5344661 请查看此答案以获取更多详细信息https://stackoverflow.com/a/5454341/5344661
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