首先定义个文本域并且给个ID
<textarea id="O_txt_1" rows="8" cols="80"> <!--要运行的代码--> </textarea>
然后定义个按钮
<input type="button" value="运行代码" οnclick="runCode('O_txt_1')" />
最后当然是要写函数了,代码如下：
function runCode(id){var obj=document.getElementById(id);var win = window.open('', "_blank", '');win.document.open('text/html', 'replace');win.opener = null;win.document.write(obj.value);win.document.close();
}
例子:
<!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>三列等高</title> <style> div{ width:200px; float:left; margin:0 10px;} #div1{ background:#F0F;} #div2{ background:#00F;} #div3{ background:#FF0;} </style> <script type="text/javascript"> window.οnlοad=function(){ var d1=document.getElementById("div1"); var d2=document.getElementById("div2"); var d3=document.getElementById("div3"); var h1=d1.offsetHeight; var h2=d2.offsetHeight; var h3=d3.offsetHeight; var maxH=Math.max(h1,h2,h3); //var minH=Math.min(h1,h2,h3); d1.style.height=d2.style.height=d3.style.height=maxH+"px"; }; </script> </head> <body> <div id="div1"> <br /> <br /> 我是最小的 <br /> <br /></div><div id="div2"><br /> <br /> <br /> <br /> <br /> <br /> <br /> </div> <div id="div3"> <br /> <br /> <br /> <br /> <br /> 我是最大的 他们都取我的值 <br /> <br /> <br /> <br /> <br /> </div> </body> </html>
