js如何让光标定位到元素内容abc的b后面？

Question

如题所述

Answer 1

<script type="text/javascript">
function setFocusPosition(i){
var obj = document.getElementById("myinput");
if(obj.selectionStart){//非IE浏览器
obj.selectionStart=i;
obj.selectionEnd=i;
}else{//IE
var range = obj.createTextRange();
range.move("character",i);
range.select();
}
}
//调用时setFocusPosition(2)

Answer 2

阿尔法突袭追问

jq?