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  • html5 canvas文本处理

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>html5 canvas文本处理</title>
    <script src="js/modernizr.js"></script>
    </head>
    
    <body>
    <script type="text/javascript">
    window.addEventListener('load',eventWindowLoaded,false);
    function eventWindowLoaded(){
        canvasApp();
    }
    function canvasSupport(){
        return Modernizr.canvas;
    }
    function canvasApp(){
        if(!canvasSupport()){
            return;
        }else{
            var theCanvas = document.getElementById('canvas')
            var context = theCanvas.getContext("2d")
    
        }
        var message="your text"
        function drawScreen(){
            context.font = '50px serif';
            context.fillStyle = '#ff0000';
            context.fillText(message,100,80);
         }
         var formElement = document.getElementById("textbox")
    //绑定textbox输入框 formElement.addEventListener(
    'keyup',textBoxChanged,false);

    //然后通过addEventListener()方法设置keyup事件,然后处理textBoxChanged函数
    function textBoxChanged(e){ var target = e.target; message=target.value; drawScreen(); } } </script> <canvas id="canvas" width="500" height="500"> 你的浏览器无法使用canvas 小白童鞋;你的支持是我最大的快乐!! </canvas> <form> Text:<input id="textbox" placeholder="your text" /><br /> </form> </body> </html>

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  • 原文地址:https://www.cnblogs.com/LoveOrHate/p/4456768.html
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