以下代码复制到txt里,然后改成
-
- <canvas id="myCanvas" height="100" style="border:1px solid #000000;">
- </canvas>
- let w=document.documentElement.clientWidth;
- let h=document.documentElement.clientHeight;
- document.getElementById('myCanvas').style.height = w + 'px'
- document.getElementById('myCanvas').style.width = h + 'px'
- window.onresize = function(e) {
- w=document.documentElement.clientWidth;
- h=document.documentElement.clientHeight;
- document.getElementById('myCanvas').style.height = w + 'px'
- document.getElementById('myCanvas').style.width = h + 'px'
- }
- let c = document.getElementById("myCanvas");
- let ctx = c.getContext("2d");
- ctx.font = "20px Arial";
- let n = 0;
- let timer = setInterval(function() {
- ctx.clearRect(0, 0, w, h); //清空所有的内容
- n++
- if (n == 100) {
- alert('ok了')
- clearInterval(timer)
- }
- ctx.strokeText("Hello World" + n, 10, 50);
- }, 100)
复制代码
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