| 本人不怎么会写JS,但是会搜索,这里找到了些别人写好的东西: 复制代码select(document, tanchu); 
/*=select[[ 
* 
* 跨浏览器选中文字事件 
* @param 
* object o 响应选中事件的DOM对象,required 
* function fn(sText,target,mouseP)选中文字非空时的回调函数,required 
* |-@param 
* |-sText 选中的文字内容 
* |-target 触发mouseup事件的元素 
* |-mouseP 触发mouseup事件时鼠标坐标 
*/ 
function select(o, fn){ 
o.onmouseup = function(e){ 
var event = window.event || e; 
var target = event.srcElement ? event.srcElement : event.target; 
if (/input|textarea/i.test(target.tagName) && /firefox/i.test(navigator.userAgent)) { 
//Firefox在文本框内选择文字 
var staIndex=target.selectionStart; 
var endIndex=target.selectionEnd; 
if(staIndex!=endIndex){ 
var sText=target.value.substring(staIndex,endIndex); 
fn(sText,target); 
} 
} 
else{ 
//获取选中文字 
var sText = document.selection == undefined ? document.getSelection().toString():document.selection.createRange().text; 
if (sText != "") { 
//将参数传入回调函数fn 
fn(sText, target); 
} 
} 
} 
} 
/*]]select=*/ 
function tanchu(txt,tar){ 
alert("文字属于"+tar.tagName+"元素,选中内容为:"+txt); 
} 
原作者见:http://momomolice.com/wordpress/archives/420.html
 
 
 附:只获得选取的文字的代码(不响应该事件)
 复制代码function getSelectedText() 
{ 
if (window.getSelection) 
{ // This technique is the most likely to be standardized. 
// getSelection() returns a Selection object, which we do not document. 
return window.getSelection().toString(); 
} 
else if (document.getSelection) 
{ 
// This is an older, simpler technique that returns a string 
return document.getSelection(); 
} 
else if (document.selection) 
{ 
// This is the IE-specific technique. 
// We do not document the IE selection property or TextRange objects. 
return document.selection.createRange().text; 
} 
} 
函数运行后会将选取的文字返回出来。
 
 原作者已不可考。。。
 |