JS将光标聚焦在文本最后的实现代码

<span style="font-family:Times New Roman;font-size:18px;"><script type="text/javascript">
//将光标聚焦在文本最后
function cursorEnd(){
var e = event.srcElement;
var r = e.createTextRange();
r.moveStart('character',e.value.length);
r.collapse(true);
r.select();
}
</script>
<input type=text name="test" value="test" onfocus="cursorEnd()"></span>