写了一段,给你参考:
<input onkeydown="mm(this)" name="txt" value="abcdefghijklmnopqrst"><script language=javascript>
function mm(e)
{
if(event.keyCode==46)
{
e.focus();
var sel1 = document.selection.createRange().duplicate();
var range = e.createTextRange();
var sel2 = sel1.duplicate();
sel2.setEndPoint("StartToStart", range);
var s = sel2.text;
if(s.length>0)
{
range.moveStart("character", s.length-1);
range.collapse(true);
range.select();
}
}
}
</script>
<input onkeydown="mm(this)" name="txt" value="abcdefghijklmnopqrst"><script language=javascript>
function mm(e)
{
if(event.keyCode==46)
{
e.focus();
var sel1 = document.selection.createRange().duplicate();
var range = e.createTextRange();
var sel2 = sel1.duplicate();
sel2.setEndPoint("StartToStart", range);
var s = sel2.text;
if(s.length>0)
{
range.moveStart("character", s.length-1);
range.collapse(true);
range.select();
}
}
}
</script>
解决方案 »
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