jquery - 如何动态添加值为 =""而不是等于最后一个表单元素的表单元素

Question

我在这里有我的表单元素:

<li><div id="formanswer1" class="clonedInput">Answer:
<input type="text" id="formanswer1" value="" /></div></li>

<li><input type="button" id="btnAdd" value="Add Answer" /></li>
<li><input type="button" id="btnDel" value="Remove Answer" /></li>

我的 jquery 代码在这里:

        $('#btnDel').attr('disabled','disabled');
        $('#btnAdd').click(function() {
        var num     = $('.clonedInput').length; // how many "duplicatable" input fields we currently have
        var newNum  = new Number(num + 1);      // the numeric ID of the new input field being added

        // create the new element via clone(), and manipulate it's ID using newNum value
        var newElem = $('#formanswer' + num).clone().attr('id', 'formanswer' + newNum);
        var guianswer = $('#guianswer'+num).clone().attr('id', 'guianswer' + newNum).html('Answer '+newNum);

        // manipulate the name/id values of the input inside the new element
        newElem.children(':first').attr('id', 'formanswer' + newNum);
        guianswer.children(':first').attr('id', 'guianswer' + newNum).attr('name', 'guianswer' + newNum);

        // insert the new element after the last "duplicatable" input field
        $('#formanswer' + num).after(newElem);
        $('#guianswer' + num).after(guianswer);

        // enable the "remove" button
        $('#btnDel').attr('disabled','');

        // business rule: you can only add 5 questions
        if (newNum == 5)
            $('#btnAdd').attr('disabled','disabled');
    });

    $('#btnDel').click(function() {
        var num = $('.clonedInput').length;
        $('#formanswer' + num).remove();

        $('#guianswer'+num).remove();

        // enable the "add" button
        $('#btnAdd').attr('disabled','');

        // if only one element remains, disable the "remove" button
        if (num-1 == 1)
            $('#btnDel').attr('disabled','disabled');
    });

我这里有一个jsfiddle:JsFiddle.net

基本上发生的情况是，当我使用按钮添加新输入时，它会复制以前的输入值。 示例:在输入 1 中，如果我输入“abc”，然后按添加按钮，当我想要值“”空白或无值时，会出现一个带有值“abc”的新输入。

非常感谢任何和所有的帮助!

Answer 1

更改此行以清除该值。

      newElem.children(':first').attr('id', 'formanswer' + newNum).val('');