js 怎么设置光标在文本框里的位置
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<input id="o_input" type="text" value="asjdlakjsdlkajsdlalsd">
<script type="text/javascript">
function setTa1CursorPosition(i){
var oTa2 = o_input;
if(oTa2.selectionStart||oTa2.selectionStart==0){//非IE浏览器
oTa2.selectionStart=i;
oTa2.selectionEnd=i;
console.log(oTa2.selectionStart)
}else{//IE
var range = oTa2.createTextRange();
range.move("character",i);
range.select();
}
}
window.onload=function(){
var o_input=document.getElementById("o_input");
o_input.onclick=function(){
o_input.blur();
setTa1CursorPosition(0);
o_input.focus();
}
}
</script>
</body>
</html>
