选择文本 兼容所有浏览器 

 1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 2 <html xmlns="http://www.w3.org/1999/xhtml">
 3 <head>
 4     <meta http-equiv="Content-Type" content="text/html;charset=UTF-8" />
 5     <title>选择文本然后全选</title>
 6     <script type="text/javascript" src="eventutil.js"></script>
 7 </head>
 8 <body>
 9     <form action="#">
10         <input name="textbox1" type="text" value="test code" />
11         <!-- <textarea name="textbox1">test code</textarea> -->
12     </form>
13     <script type="text/javascript" src="test03.js"></script>
14 </body>
15 </html>

 

 1 var textbox = document.forms[0].elements["textbox1"];
 2 
 3 function selectText(textbox, startIndex, stopIndex) {
 4     if (textbox.setSelectionRange) {
 5         textbox.setSelectionRange(startIndex, stopIndex);
 6     } else if (textbox.createTextRange) {
 7         var range = textbox.createTextRange();
 8         range.collapse(true);
 9         range.moveStart("character", startIndex);
10         range.moveEnd("character", stopIndex - startIndex);
11         range.select();
12     }
13     textbox.focus();
14 }
15 
16 textbox.value = "Hello world!";
17 console.log(textbox.value);
18 
19 //选择所有文本
20 selectText(textbox, 0, textbox.value.length);
21 
22 //选择前3个字符
23 selectText(textbox, 0, 3);
24 
25 //选择第4到第6字符
26 selectText(textbox, 4, 7);
posted @ 2012-06-03 17:01  小猩猩君  阅读(220)  评论(0)    收藏  举报