刚学HTML5没多久，写了个简单画板，勿喷~
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title>Examples</title>
<meta name="description" content="">
<meta name="keywords" content="">
<link href="" rel="stylesheet">
<style>
.color{
padding: 10px;
}
#btnClear{
/* width: 50px;
height: 20px;*/
margin: 0 10px;
}
#con{
background: #999;
}
</style>
<script>
window.onload=function(){
var oCon=document.getElementById(‘con‘);
var cxt=oCon.getContext("2d");
var oBtn=document.getElementById(‘btnClear‘);
oBtn.onclick=function(){
cxt.clearRect(0, 0, 400, 400);
}
oCon.onmousedown=function(e){
var oVal=document.getElementById(‘cVal‘).value;
cxt.strokeStyle=oVal;
var myX=e.layerX;
var myY=e.layerY;
cxt.beginPath();
cxt.moveTo(myX, myY);
document.onmousemove=function(e){
var mX=e.layerX;
var mY=e.layerY;
cxt.lineTo(mX, mY);
cxt.stroke();
}
document.onmouseup=function(){
document.onmousemove=null;
document.onmouseup=null;
}
}
}
</script>
</head>
<body>
<div class="color">请选择画笔颜色：<input type="color" id="cVal"><button id="btnClear" >清除画板</button></div>
<canvas id="con" width="400" height="400"></canvas>
</body>
</html>
时间： 2024-10-12 19:18:53