[转] javascript innerHTML中运行script

原生的javascript的innerHTML属性是直接赋上代有脚本的字符串时，脚本将不执行。

必须使用自定义的替代函数做到，见下方例子：

<script type="text/javascript">
<!--
function write(objId,str)
{
obj=document.getElementById(objId);
obj.innerHTML+=str;
}

function writeln(objId,str)
{
    obj=document.getElementById(objId);
    obj.innerHTML+="<br>"+str;
}

function set_innerHTML(objId, html) {
    obj=document.getElementById(objId)
    var ie = navigator.appVersion.match(/MSIE/);
    var opera = (navigator.userAgent.toLowerCase().indexOf("opera") != -1);
    if (ie && !opera) {
        html = '<span style="display: none">hack ie</span>' + html;
    }
    obj.innerHTML = html;
    var scripts = obj.getElementsByTagName("script");
    if (scripts) {
    repstr="write('"+objId+"',"
    repstr2="writeln('"+objId+"',"
        for (var i = 0; i < scripts.length; i++) {
            script= scripts[i].text.replace(/document.write\(/ig,repstr).replace(/document.writeln\(/ig,repstr2)

                    eval(script)
 
        }
    }
}
-->
</script>
<div id="abc"></div>
<script>
set_innerHTML('abc', '<script>alert("Hello")<\/script>');
// 去掉注释看看
//document.getElementById('abc').innerHTML = '<script>alert("Hello")<\/script>';  // 由于javascript自身的限制，这段代码将不起作用
</script>

 

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http://bbs.blueidea.com/thread-2440594-1-1.html