jQuery实现移动端评测问卷功能

效果图：

需求：

1.有10道测试题目，单选，选中答案之后，500ms后自动跳转至下一题

2.如果当前题目没有选择答案，将弹窗提示“请选择答案！”

3.点击“上一题”，“下一题”将实现跳转题目，第一题的时候，“上一题”按钮为灰色

4.第10题选择答案之后将选中的题目分数相加，自动出现评测结果，对评测结果不满意的可以点击“重新测评”再测一次

5.单页功能，不实现页面跳转

构思：

1.单选按钮需要替换背景图片，可以通过class来切换，并用另外一个class来标识选中

2.用li来代表每一道题

需要使用的图片

代码实现以及讲解：

html部分：

1.题目：

<section class="risk">
    <div class="select">
        <ul id="subjectBox">

        </ul>
    </div>
    <div class="pro-box">
        <div class="pro-bg">
            <div class="pro-col" id="scroller"></div>
        </div>
        <p><span id="current"></span>/<span id="total"></span></p>
    </div>
    <div class="btns">
        <div id="preBtn">上一题</div>
        <div id="nextBtn" class="blue">下一题</div>
    </div>
</section>

2.提示弹窗

<section>
    <div id="choice-tip">请选择答案!</div>
</section>

3.评测结果

<section class="result-box">
    <p>-您当前的风险承受能力-</p>
    <div class="result-1">
        <img src="" id="result-img">
        <div class="result-txt">
            <div id="result-type"></div>
            <div class="result-money">
                <p>建议最大投资金额：<span id="max-money"></span></p>
                <p>您当前已投资金额：<span id="invest-money"></span></p>
            </div>
        </div>
    </div>
    <div class="ok-btn">确定</div>
    <div id="reset">重新测评</div>
</section>

css部分：

body{font-family: 'Helvetica Neue', Helvetica, sans-serif,'微软雅黑'!important;background: #f5f6fb;}
html {-webkit-text-size-adjust: 100%;-ms-text-size-adjust: 100%;}
body,div,ul,li,input,a,img{margin:; padding:; border:none;font-family: 'Helvetica Neue', Helvetica, sans-serif,'微软雅黑'!important;}
.risk{margin-top:1rem;color:#333;font-size:1.3rem;}
.risk .select ul li{display: none;}
.risk .select ul li.active{display: block;}
.risk .select ul li .line{transition:all 0.5s;border-bottom: 1px solid #ccc;padding:1rem 2rem 1rem;position:relative;}
.risk .select ul li p.line{font-size:1.4rem;}
.risk .select ul li div.line{padding:1rem 3.5rem 1rem 2rem}
.risk .select ul li input[type=radio]{position:absolute;top:50%;transform:translate(0,-50%);right:1rem;}
.risk .select ul li .check-img{background:url("../img/risk-test/checked-mark.png") no-repeat center;height: 2rem;background-size: 100%;position:absolute;top:50%;-webkit-transform:translate(0,-50%);transform:translate(0,-50%);right:1rem;width:2rem;}
.risk .pro-box{text-align: center;}
.risk .select ul li .check-img.uncheck{background:url("../img/risk-test/unchecked-mark.png") no-repeat center;height: 2rem;background-size: 100%;position:absolute;top:50%;-webkit-transform:translate(0,-50%);transform:translate(0,-50%);right:1rem;width:2rem;}
.risk .pro-box{text-align: center;}
.risk .pro-box .pro-bg{width: 90%;background: #e4e4ea;height: .6rem;margin: 2rem auto auto;border-radius: 2rem;}
.risk .pro-box .pro-bg .pro-col{width: 10%;background: #5175b3;height: 100%;border-radius: 2rem;}
.risk .btns{position: fixed;bottom:;left:;width:100%;text-align: center;box-sizing: border-box;}
.risk .btns div{width:49.7%;height:3.5rem;line-height: 3.5rem;float:left;border-top:1px solid #ddd;border-right: 1px solid #ddd;}
.risk .btns div:nth-child(2){border-right:;}
.risk .btns div.blue{color:#5175b3;}
#choice-tip{display:none;border-radius:.5rem;font-size:1.5rem;background: #000;color:#fff;padding:1rem;position:absolute;top:50%;left:50%;-webkit-transform:translate(-50%,-50%);transform:translate(-50%,-50%);}

.result-box{font-size:1.2rem;color:#666;padding-top: 3rem;text-align: center;display: none;position:absolute;top:;left:;}
.result-box img{width:45%;margin:1.5rem auto;}
.result-box .result-txt{padding:0 4rem;text-align: justify;line-height: 1.8rem;}
.result-box .result-txt .result-money{color:#5175b3;}
.result-box .ok-btn{width:70%;margin:2rem auto 1rem;padding:1rem 0;background: #5175b3;color:#fff;font-size:1.3rem;border-radius: .5rem;}
#reset{color:#5175b3;margin-bottom: 2rem;font-size:1.3rem;}

@media screen and (max-width:399px)
 {
     html{
         font-size: 12px!important;
     }
 }
 @media (min-width: 400px) and (max-width: 480px)
 {
     html{
         font-size: 14px!important;
     }
 }
 @media (min-width: 481px) and (max-width: 640px)
 {
     html{
         font-size: 20px!important;
     }
 }
  @media (min-width: 641px) and (max-width: 960px)
 {
     html{
         font-size: 26px!important;
     }
 }
 @media screen and (min-width: 961px)
 {
     html{
         font-size: 36px!important;
     }
 }

jq部分：

1.定义会用到的变量

       // 当前题目索引
        var currentSubjectIndex = 1;
        // 总题数
        var subjectTotal = subjectArray.length;
        // 上一题按钮
        var $preBtn = $("#preBtn");
        // 下一题按钮
        var $nextBtn = $("#nextBtn");
        // 题目容器
        var $subjectBox = $("#subjectBox");
        // 总题数容器
        var $total = $("#total");

        // 进度条
        var $scroller = $("#scroller");

        //重新测评按钮
        var $reset = $("#reset");

2.点击效果

　　　　// 选中题目点击
        $subjectBox.find("div.line").on("click", function(){
            if(currentSubjectIndex >= 1){
              $preBtn.addClass("blue");
            }
　　　　　　  //get为选中的答案标识
            $(this).find(".check-img").removeClass("uncheck").addClass("get");
            $(this).siblings().find(".check-img").addClass("uncheck");
            setTimeout(nextPage,300);
        });

        // 上一题按钮点击
        $preBtn.on("click", function(){ prePage(); });

        // 下一题按钮点击
        $nextBtn.on("click", function(){ nextPage(); });
　　　　 //重新测评按钮点击
        $reset.on("click", function(){ resetTest(); });

3.函数

        /**
         * 初始化题目容器
         */
        function initSubjectBox(){
            var subjectHtml = '';
            for(var i=0; i<subjectArray.length; i++){
                subjectHtml += getSubjectHtml(subjectArray[i], i+1);
            }

            $subjectBox.html(subjectHtml);
            $("#index_" + currentSubjectIndex).addClass("active");

            // 改变进度条
            changeScroller();
        }

        /**
         * 获取题目HTML
         */
        function getSubjectHtml(subject, index){
            var subjectItemHtml = getSubjectItemHtml(subject['answers_items'], index);
            var html = ''
            +'<li id="index_' + index + '">'
                +'<p class="line">'
                    +'<span>' + index + '.</span>'
                    +'<span>' + subject.title +'</span>'
                +'</p>'
                + subjectItemHtml
            +'</li>'
            return html;
        }

        /**
         * 获取题目选项HTML
         */
        function getSubjectItemHtml(subjectItemArray, index){
            var html = '';
            for(var i=0; i<subjectItemArray.length; i++){
                var subjectItem = subjectItemArray[i];
                html += ''
                +'<div class="line" value="' + subjectItem.point + '">'
                    +'<span>' + subjectItem.result + '.</span>'
                    +'<span>' + subjectItem.content + '</span>'
                    +'<div class="check-img uncheck">'+'</div>'
                +'</div>';
            }
            return html;
        }

        /**
         * 改变进度条
         */
        function changeScroller(){
            $scroller.width(currentSubjectIndex/subjectTotal * 100 + "%");
        }

        /**
         * 获取总分数
         */
        function getTotalPoint(){
            var result = 0;
            var selectedOptionArray = $subjectBox.find(".get");
            $(selectedOptionArray).each(function(){
                result += parseInt($(this).parent().attr("value"));
            });
            return result;
        }

        /**
         * 上一题
         */
        function prePage(){
          //console.log(currentSubjectIndex);
            if(currentSubjectIndex <= 1){return;}
            if(currentSubjectIndex == 2){$preBtn.removeClass("blue");}
            currentSubjectIndex--;
            flipPage();
        }

        /**
         * 下一题
         */
        function nextPage(){
          //console.log(currentSubjectIndex);
          if(currentSubjectIndex >= 1){
            $preBtn.addClass("blue");
          }
            var nopass = $("#index_" + currentSubjectIndex).find(".get").length == 0 ? true : false;
            if(nopass){
                $("#choice-tip").fadeIn();
                setTimeout("$('#choice-tip').fadeOut()",1000);
                return;
            }
            if(currentSubjectIndex == subjectTotal){ 
　　　　　　　　　　//得出结果
                var result = getTotalPoint();
                //console.log("您的得分是：" + result);
                var imgSrc = $("#result-img"),
                    resultType = $("#result-type"),
                    maxMoney = $("#max-money"),
                    investMoney = $("#invest-money");

                    if(result >= 0 && result <= 22){
                      imgSrc.attr("src","img/risk-test/result1.png");
                      resultType.html("评测结果：保守型")
                      maxMoney.html("10万元");
                      investMoney.html("30,000.12元")
                    }else if(result >= 23 && result <= 44){
                      imgSrc.attr("src","img/risk-test/result2.png");
                      resultType.html("评测结果：稳健型")
                      maxMoney.html("20万元");
                      investMoney.html("30,000.12元")
                    }else if(result >= 45 && result <= 66){
                      imgSrc.attr("src","img/risk-test/result3.png");
                      resultType.html("评测结果：平衡型")
                      maxMoney.html("30万元");
                      investMoney.html("30,000.12元")
                    }else if(result >= 67 && result <= 88){
                      imgSrc.attr("src","img/risk-test/result4.png");
                      resultType.html("评测结果：积极型")
                      maxMoney.html("40万元");
                      investMoney.html("30,000.12元")
                    }else{
                      imgSrc.attr("src","img/risk-test/result5.png");
                      resultType.html("评测结果：激进型")
                      maxMoney.html("50万元");
                      investMoney.html("30,000.12元")
                    }
                    $(".risk").fadeOut();
                    $(".result-box").fadeIn();
                return;
            }
            currentSubjectIndex++;
            flipPage()
        }

        /**
         * 翻页
         */
        function flipPage(){
            $subjectBox.find("li").removeClass("active");
            $("#index_" + currentSubjectIndex).addClass("active");
            $("#current").html(currentSubjectIndex);
            changeScroller();
        }

        /**
         * 重新测评
         */
        function resetTest(){
          currentSubjectIndex = 1;
          $(".risk").fadeIn();
          $(".result-box").fadeOut();
          $preBtn.removeClass("blue");
          $(".check-img").removeClass("get").addClass("uncheck");
          flipPage();
        }

在得出结果那里，总分的分层范围中，resultType，maxMoney，investMoney实际为后台读取的数据。

json对象：

    var object = {
      "question_items" : [ {
        "title" : "您的年龄是：",
        "type" : "TYPE_RADIO",
        "answers_items" : [ {
          "result" : "A",
          "point" : 10,
          "content" : "18-30岁"
        }, {
          "result" : "B",
          "point" : 8,
          "content" : "31-40岁"
        }, {
          "result" : "C",
          "point" : 5,
          "content" : "41-50岁"
        }, {
          "result" : "D",
          "point" : 3,
          "content" : "50岁以上"
        } ]
        }, {
          "title" : "您的家庭年收入为（税后折合人民币）？",
          "type" : "TYPE_RADIO",
          "answers_items" : [ {
            "result" : "A",
            "point" : 3,
            "content" : "10万以下"
          }, {
            "result" : "B",
            "point" : 5,
            "content" : "10-30万"
          }, {
            "result" : "C",
            "point" : 8,
            "content" : "30-100万"
          }, {
            "result" : "D",
            "point" : 10,
            "content" : "100万以上"
          } ]
        }, {
          "title" : "您期望的投资期限是多久？",
          "type" : "TYPE_RADIO",
          "answers_items" : [ {
            "result" : "A",
            "point" : 4,
            "content" : "活期"
          }, {
            "result" : "B",
            "point" : 6,
            "content" : "1-3个月"
          }, {
            "result" : "C",
            "point" : 8,
            "content" : "4-6个月"
          }, {
            "result" : "D",
            "point" : 10,
            "content" : "7-12个月"
          } ]
        }, {
          "title" : "以下金融投资方式，您投资比例最高的在以下哪一类？",
          "type" : "TYPE_RADIO",
          "answers_items" : [ {
            "result" : "A",
            "point" : 3,
            "content" : "基本没有金融产品相关知识，除存款、国债外，我几乎不投资其他金融产品"
          }, {
            "result" : "B",
            "point" : 5,
            "content" : "对金融产品有初步认识，除投资于存款、国债外，偶尔投资于股票、基金等产品"
          }, {
            "result" : "C",
            "point" : 8,
            "content" : "对金融产品有一定的理解，投资过存款、国债、银行理财产品、信托产品、股票、基金等产品"
          }, {
            "result" : "D",
            "point" : 10,
            "content" : "金融专业人士，长期投资于证券、期货等产品"
          } ]
        }, {
          "title" : "您有多少年投资风险产品的经验（如：股票、P2P、基金、外汇、金融衍生产品等）？",
          "type" : "TYPE_RADIO",
          "answers_items" : [ {
            "result" : "A",
            "point" : 3,
            "content" : "没有经验"
          }, {
            "result" : "B",
            "point" : 5,
            "content" : "2年以下"
          }, {
            "result" : "C",
            "point" : 8,
            "content" : "2-5年"
          }, {
            "result" : "D",
            "point" : 10,
            "content" : "5年以上"
          } ]
        }, {
          "title" : "您的家庭收入每年可用于金融投资的比例为？",
          "type" : "TYPE_RADIO",
          "answers_items" : [ {
            "result" : "A",
            "point" : 3,
            "content" : "10%以内"
          }, {
            "result" : "B",
            "point" : 5,
            "content" : "10%-25%"
          }, {
            "result" : "C",
            "point" : 8,
            "content" : "25%-50%"
          }, {
            "result" : "D",
            "point" : 10,
            "content" : "50%以上"
          } ]
        }, {
          "title" : "您对P2P投资希望达到的年收益率水平？",
          "type" : "TYPE_RADIO",
          "answers_items" : [ {
            "result" : "A",
            "point" : 3,
            "content" : "7%～10%"
          }, {
            "result" : "B",
            "point" : 5,
            "content" : "10%～15%"
          }, {
            "result" : "C",
            "point" : 8,
            "content" : "15%～20%"
          }, {
            "result" : "D",
            "point" : 10,
            "content" : "20%以上"
          } ]
        }, {
          "title" : "您在过去所有的投资理财经历中是否有过亏损或被套的经历？",
          "type" : "TYPE_RADIO",
          "answers_items" : [ {
            "result" : "A",
            "point" : 10,
            "content" : "从未亏损或被套"
          }, {
            "result" : "B",
            "point" : 8,
            "content" : "亏损或被套在30%以内"
          }, {
            "result" : "C",
            "point" : 5,
            "content" : "亏损或被套在30%—60%"
          }, {
            "result" : "D",
            "point" : 3,
            "content" : "亏损或被套在60%以上"
          } ]
        }, {
          "title" : "在您每年的家庭收入中，可用于金融投资（储蓄存款除外）的比例为？",
          "type" : "TYPE_RADIO",
          "answers_items" : [ {
            "result" : "A",
            "point" : 3,
            "content" : "10%以下"
          }, {
            "result" : "B",
            "point" : 5,
            "content" : "10%-25%"
          }, {
            "result" : "C",
            "point" : 8,
            "content" : "25%-50%"
          }, {
            "result" : "D",
            "point" : 10,
            "content" : "50%以上"
          } ]
        }, {
          "title" : "您目前投资了多少家P2P平台？",
          "type" : "TYPE_RADIO",
          "answers_items" : [ {
            "result" : "A",
            "point" : 3,
            "content" : "0-3家"
          }, {
            "result" : "B",
            "point" : 5,
            "content" : "4-8家"
          }, {
            "result" : "C",
            "point" : 8,
            "content" : "8-12家"
          }, {
            "result" : "D",
            "point" : 10,
            "content" : "12家以上"
          } ]
      } ]
    }
　　var subjectArray = object['question_items'];