比如选择第一个字符
<form name=form1>
<input value='11111111111' name="i1">
<input type=button value="select" onclick="ss();">
</form>
<script>
function ss(){
var o=document.form1.i1.createTextRange();
o.moveStart("character",0);
o.moveEnd("character",-(document.form1.i1.value.length-1));
o.select();
}
</script>
<form name=form1>
<input value='11111111111' name="i1">
<input type=button value="select" onclick="ss();">
</form>
<script>
function ss(){
var o=document.form1.i1.createTextRange();
o.moveStart("character",0);
o.moveEnd("character",-(document.form1.i1.value.length-1));
o.select();
}
</script>
解决方案 »
免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货