jQuery动态添加、删除按钮及input输入框

输入框的加减实现：

<html>
<head>
    <meta charset="utf-8">
    <title>动态创建按钮</title>
    <script src='http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js'></script>
</head>
<body>
<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" id="AddMoreFileBox" class="btn btn-info">添加更多的input输入框</a></span></p>
<div id="InputsWrapper">
    <div><input type="text" name="mytext[]" id="field_1" value="Text 1"/><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="removeclass"><input type='button' value='删除'></a></div>
</div>
<script>
    $(document).ready(function() {
        var MaxInputs    = 8; //maximum input boxes allowed
        var InputsWrapper  = $("#InputsWrapper"); //Input boxes wrapper ID
        var AddButton    = $("#AddMoreFileBox"); //Add button ID
        var x = InputsWrapper.length; //initlal text box count
        var FieldCount=1; //to keep track of text box added
        $(AddButton).click(function (e) //on add input button click
        {
            if(x <= MaxInputs) //max input box allowed
            {
                FieldCount++; //text box added increment
                //add input box
                $(InputsWrapper).append('<div><input type="text" name="mytext[]" id="field_'+ FieldCount +'" value="Text '+ FieldCount +'"/><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="removeclass"><input type="button" value="删除"></a></div>');
                x++; //text box increment
            }
            return false;
        });
        $("body").on("click",".removeclass", function(e){ //user click on remove text
            if( x > 1 ) {
                $(this).parent('div').remove(); //remove text box
                x--; //decrement textbox
            }
            return false;
        })
    });
</script>
</body>
</html>

效果：

2、把上面的输入框的值ajax传回后台参考：

// 创建map，放入可变数量的输入框对组成的key-value
$("#opt_send").click(function(){
    console.log(x);
    var map = {}
    for (var i = 1; i <= x; i++) {
        var key = $("#field_1_" + i).val();
        var value = $("#field_2_" + i ).val();
        map[key]=value;
    }

    // 使用JSON.stringify()方法解析，防止后台json数据显示[object Object]
    var json= JSON.stringify(map);
    jQuery.ajax({
        url: "/test_tool/bizComponent.json",
        type:"POST",
        data: {
            aa: $("#opt_aa").val(),
            bb: $("#opt_bb").val(),
            inputParameters: json
        },
        success: function(data){
            if(data.success){
                
            }else{
                
            }
        }
    })
})