js光标移动到输入框最后位置函数

function toEnd (obj){// var obj &＃61; event.srcElement ? event.srcElement : event.target;if (obj.createTextRange) {//IE浏览器var range &＃61; obj.createTextRange();range.moveStart("character", obj.value.length);//getObj(&＃39;identity_card&＃39;)range.moveEnd("character", obj.value.length);range.collapse(true);range.select();} else {//非IE浏览器// obj.setSelectionRange(getObj(&＃39;identity_card&＃39;).value.length, getObj(&＃39;identity_card&＃39;).value.length);
obj.setSelectionRange(obj.value.length, obj.value.length);obj.focus();}
}