form表单提交json格式数据

https://blog.csdn.net/n447194252/article/details/77839594

<script type="application/javascript">
    //发送表单ajax请求
    $(':submit').on('click',function(){
        $.ajax({
            url:"buy",
            type:"POST",
            data:JSON.stringify($('form').serializeObject()),
            contentType:"application/json",  //缺失会出现URL编码，无法转成json对象
            success:function(){
                alert("成功");
            }
        });
    });

    /**
     * 自动将form表单封装成json对象
     */
    $.fn.serializeObject = function() {
        var o = {};
        var a = this.serializeArray();
        $.each(a, function() {
            if (o[this.name]) {
                if (!o[this.name].push) {
                    o[this.name] = [ o[this.name] ];
                }
                o[this.name].push(this.value || '');
            } else {
                o[this.name] = this.value || '';
            }
        });
        return o;
    };
</script>