表单json字符串生成

需求：输入值后，用jQuery获取表单的JSON字符串，key和value分别对应每个输入的name和相应的value，例如：{"name":"Michael","email":...}


html结构如下：

<form id="test-form" action="#0" onsubmit="return false;">
    <p><label>Name: <input name="name"></label></p>
    <p><label>Email: <input name="email"></label></p>
    <p><label>Password: <input name="password" type="password"></label></p>
    <p>Gender: <label><input name="gender" type="radio" value="m" checked> Male</label> <label><input name="gender"

type="radio" value="f"> Female</label></p>
    <p><label>City: <select name="city">
        <option value="BJ" selected>Beijing</option>
        <option value="SH">Shanghai</option>
        <option value="CD">Chengdu</option>
        <option value="XM">Xiamen</option>
    </select></label></p>
    <p><button type="submit">Submit</button></p>

</form>

解决方案如下：

'use strict';
var json = null;

var arr = $('#test-form input,select');
var obj = {};
arr.map(function () {
    if (this.type === 'radio' && this.checked != true) {
        return;
    }
    obj[this.name] = this.value;
});
json = JSON.stringify(obj);