js 获取文本焦点,js将焦点置于文本最后
function moveEnd(obj) { obj.focus(); var len = obj.value.length; if (document.selection) { var sel = obj.createTextRange(); sel.moveStart('character', len); sel.collapse(); sel.select(); } else if (typeof obj.selectionStart == 'number' && typeof obj.selectionEnd == 'number') { obj.selectionStart = obj.selectionEnd = len; } }