在Internet Explorer中设置文本区域选择

这对我很有用:

<textarea id="lol">
noasdfkvbsdobfbgvobosdobfbgoasopdobfgbooaodfgh
</textarea>

<script>
var range = document.getElementById('lol').createTextRange();
range.collapse(true);
range.moveStart('character', 5);
range.moveEnd('character', 10);
range.select();
</script>

有用链接:

• http://help.dottoro.com/ljlwflaq.php
• http://www.webreference.com/programming/javascript/ncz/
• http://www.quirksmode.org/dom/range_intro.html

msdn上的movestart(): http://msdn.microsoft.com/en-us/library/ms536623%28VS.85%29.aspx

msdn上的moveend(): http://msdn.microsoft.com/en-us/library/ms536620%28VS.85%29.aspx

尝试用

function select(e, start, end){
     e.focus();
     if(e.setSelectionRange)
        e.setSelectionRange(start, end);
     else if(e.createTextRange) {
        e = e.createTextRange();
        e.collapse(true);
        e.moveEnd('character', end);
        e.moveStart('character', start);
        e.select();
     }
}
select(document.getElementById('textarea_id'), 5, 10);

正如已经评论过的,move方法将行分隔符看作一个字符( \n )而不是两个( \r\n )我已经调整了程序来弥补这一点:

function select(el, start, end) {
    el.focus();

    if (el.setSelectionRange) { 
        el.setSelectionRange(start, end);
    } 
    else { 
        if(el.createTextRange) { 
            var normalizedValue = el.value.replace(/\r\n/g, "\n");

            start -= normalizedValue.slice(0, start).split("\n").length - 1;
            end -= normalizedValue.slice(0, end).split("\n").length - 1;

            range=el.createTextRange(); 
            range.collapse(true);
            range.moveEnd('character', end);
            range.moveStart('character', start); 
            range.select();
        } 
    }
}

当心行分隔符,move*方法将它们视为一个字符,但实际上它们是两个-\r\n