Js实现当输入框文字变化时实现光标总是定位在最后
function setCursor(obj){if (obj.createTextRange) {range = obj.createTextRange();range.collapse(true);range.moveStart('character', obj.value.length);range.select();}else if (obj.setSelectionRange) {setTimeout(function(){obj.setSelectionRange(obj.value.length, obj.value.length);obj.focus();}, 0);}}