<script> window.onload = function(){ <PRE class=javascript name="code">if(window.navigator.userAgent.toLowerCase().indexOf("msie")==0){ //firefox innerText HTMLElement.prototype.__defineGetter__( "innerText", function(){ var anyString = ""; var childS = this.childNodes; for(var i=0; i<childS.length; i++) { if(childS[i].nodeType==1) anyString += childS[i].tagName=="BR" ? '\n' : childS[i].textContent; else if(childS[i].nodeType==3) anyString += childS[i].nodeValue; } return anyString; } ); HTMLElement.prototype.__defineSetter__( "innerText", function(sText){ this.textContent=sText; } ); };</PRE>var test = document.getElementById("test");<BR> var innerText_s = test.innerText;<BR> if( innerText_s == undefined ){<BR> alert( test.textContent ); // firefox<BR> }else{ <BR> alert( test.innerText);<BR> };<BR> <BR> <BR> }<BR> <BR> <BR> </script><BR> <PRE></PRE> <P><BR> </P> <P>html代码</P> <P><div id="test"><BR>       <span style="color:red">test1</span> test2<BR> </div><BR> </P>