function moveEnd(obj){
obj.focus();
var len = obj.value.length;
if (document.selection) {
var sel = obj.createTextRange();
sel.moveStart('character',len); //设置开头的位置
sel.collapse();
sel.select();
} else if (typeof obj.selectionStart == 'number' && typeof obj.selectionEnd == 'number') {
obj.selectionStart = obj.selectionEnd = len;
}
}
moveEnd($("#user_name").get(0));
//若定位光标后续有操作，则在调用时套上setTimeout
setTimeout(function() {
moveEnd($('#bankCardNo').get(0));
}, 0);
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