面向新手《二十一》video详解，wx.request使用post参数说明

 wx.request({
                        url: app.requestUrl("Index/answer"),
                        method: 'POST',
                        data: {
                            answer: JSON.stringify(needData),
                        },
                        header: { "content-type": "application/x-www-form-urlencoded" },
                        dataType: "json",
                        success: function(res) {

                        }

                    });

    public function answer(){
        $answer=I('post.answer');
        $answer=htmlspecialchars_decode($answer);
        $answer=json_decode($answer);
    }