前端之家收集整理的这篇文章主要介绍了
JS实现简单的选择题测评系统代码思路详解(demo)，
前端之家小编觉得挺不错的，现在分享给大家，也给大家做个参考。
包含内容：JS封装表单，JS校验表单
说是测评系统，感觉只能算是一个小小的Demo，很水，，没有数据库库，，仅使用JS做简单的选择题测评系统
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一、设计思路
表单封装：
【1】由于采用JS封装提交所以，不需要form标签
【2】放置多个input标签，作为输入项
【3】编写JS获取输入项，并通过get方式提交到另一个页面
校验表单（显示结果）
【1】获取get传入的参数
【2】通过JS解析
【3】显示到相应位置
--------------------------------------------------------------------------------
二、参考源码如下
request.html
考试系统@H_<a href="/tag/301/" target="_blank" class="keywords">301</a>_37@
<<a href="/tag/Meta/" target="_blank" class="keywords">Meta</a> http-equiv="accept-charset" charset="utf-8">
<script src="jquery.min.js"></script>
<script type="text/javascript">
function getjson() {
var ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a> = new Array();
for (var i = 1; i <= 5; i++) {//<a href="/tag/huoqu/" target="_blank" class="keywords">获取</a>ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>的值
var ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_name = new String("ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_" + i);
ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>[i - 1] = $('input:ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>[name=' + ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_name + ']:checked').val()
}
for (var i = 1; i <= 2; i++) {//<a href="/tag/huoqu/" target="_blank" class="keywords">获取</a>check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>的的输入
var check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>_name = new String("check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>_" + i);
var chk_value = [];
$('input:check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>[name=' + check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>_name + ']:checked').each(function () {
chk_value.push($(this).val());
});
ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>[i + 4] = "";//置为空
for (var j = 0; j < chk_value.length; j++) {
radio[i + 4] = radio[i + 4] + chk_value[j];
}
}
//数组转json串
var json = JSON.stringify(radio);
return json;
}
function my_confirm() {
var json = getjson();
var msg = "您真的答案是：" + json + ",是否确认提交";
if (confirm(msg) == true) {
window.location.href = "result.html?radio=" + 5 + "checkbox=" + 2 + "&json=" + json;
} else {
return false;
}
}
$(function () {
var m = 1;
var s = 10;
setInterval(function () {
if (m >= 0) {
if (s < 10) {
$('#time').html("剩余时间：" + m + ':0' + s);
} else {
$('#time').html("剩余时间：" + m + ':' + s);
}
s--;
if (s < 0) {
s = 59;
m--;
}
if (m == 0 && s < 1) {
window.location.href = "result.html?ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>=" + 5 + "check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>=" + 2 + "&json=" + getjson();
}
}
},1000)
})
</script>
</head>
<body>
<h3 style="float: left">2016--2017学年期末测试题</h3>
<div id="time" style="color:red;float: right;margin: 12px 20px 0 0;padding: 0 0 0 0;font-size: xx-large"></div>
<br/><br/><br/>
<hr/>
<h4>一、单选题（每题12分，满分60分）</h4>
1.当<a href="/tag/fangfa/" target="_blank" class="keywords">方法</a>遇到异常又不知如何处理时，下列（） 做法是正确的。<br>
<input type="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>" name="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_1" value="A">A、捕获异常<br>
<input type="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>" name="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_1" value="B">B、抛出异常<br>
<input type="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>" name="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_1" value="C">C、声明异常<br>
<input type="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>" name="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_1" value="D">D、嵌套异常<br>
2.下列说法<a href="/tag/cuowu/" target="_blank" class="keywords">错误</a>的是() <br>
<input type="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>" name="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_2" value="A">A、在java中一个类被声明为final类型，表示该类不能被继承。<br>
<input type="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>" name="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_2" value="B">B、当一个对象被当作参数传递到一个<a href="/tag/fangfa/" target="_blank" class="keywords">方法</a>后，此<a href="/tag/fangfa/" target="_blank" class="keywords">方法</a>可改变这个对象的<a href="/tag/shuxing/" target="_blank" class="keywords">属性</a>，这叫引用传递。<br>
<input type="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>" name="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_2" value="C">C、一个类不能既被声明为 abstract，又被声明为final。<br>
<input type="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>" name="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_2" value="D">D、<a href="/tag/fangfa/" target="_blank" class="keywords">方法</a>的覆盖(Overriding)和重载(Overloading)是Java多态性的表现，他们没有区别。<br>
3.下列创建数组的<a href="/tag/fangfa/" target="_blank" class="keywords">方法</a>哪个是<a href="/tag/cuowu/" target="_blank" class="keywords">错误</a>的? <br>
<input type="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>" name="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_3" value="A">A、Date[] arr = new Date[5];<br>
<input type="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>" name="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_3" value="B">B、Date arr[] = new Date[];<br>
<input type="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>" name="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_3" value="C">C、Date arr[][] = new Date[4][5];<br>
<input type="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>" name="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_3" value="D">D、Date arr[][] = new Date[4][];<br>
4.在读<a href="/tag/wenjian/" target="_blank" class="keywords">文件</a>Employee.txt 时，可以直接使用该<a href="/tag/wenjian/" target="_blank" class="keywords">文件</a>作为参数的类是() <br>
<input type="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>" name="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_4" value="A">A、BufferedReader<br>
<input type="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>" name="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_4" value="B">B、FileInputStream<br>
<input type="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>" name="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_4" value="C">C、DataOutputStream<br>
<input type="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>" name="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_4" value="D">D、DataInputStream<br>
5.下列关于线程的说法中，<a href="/tag/cuowu/" target="_blank" class="keywords">错误</a>的是？ <br>
<input type="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>" name="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_5" value="A">A、线程必须通过<a href="/tag/fangfa/" target="_blank" class="keywords">方法</a>start() 来启动。<br>
<input type="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>" name="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_5" value="B">B、线程创建后，其优先级是可以改变的。<br>
<input type="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>" name="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_5" value="C">C、实现Runnable接口或者从Thread类派生的线程类没有区别。<br>
<input type="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>" name="ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_5" value="D">D、当对象用synchronized 修饰时，表明该对象在任一时刻只能由一个线程访问。<br>
<br/>
<h4>二、多选题（每题20分，满分40分，错选、少选、多选不得分）</h4>
6.下列说法正确的是() <br>
<input type="check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>" name="check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>_1" value="A">A、在java中一个类被声明为final类型，表示该类不能被继承。<br>
<input type="check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>" name="check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>_1" value="B">B、当一个对象被当作参数传递到一个<a href="/tag/fangfa/" target="_blank" class="keywords">方法</a>后，此<a href="/tag/fangfa/" target="_blank" class="keywords">方法</a>可改变这个对象的<a href="/tag/shuxing/" target="_blank" class="keywords">属性</a>，这叫引用传递。<br>
<input type="check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>" name="check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>_1" value="C">C、一个类不能既被声明为 abstract，又被声明为final。<br>
<input type="check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>" name="check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>_1" value="D">D、<a href="/tag/fangfa/" target="_blank" class="keywords">方法</a>的覆盖(Overriding)和重载(Overloading)是Java多态性的表现，他们没有区别。<br>
7.当<a href="/tag/fangfa/" target="_blank" class="keywords">方法</a>遇到异常又不知如何处理时，下列（） 做法是不正确的。<br>
<input type="check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>" name="check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>_2" value="A">A、捕获异常<br>
<input type="check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>" name="check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>_2" value="B">B、抛出异常<br>
<input type="check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>" name="check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>_2" value="C">C、声明异常<br>
<input type="check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>" name="check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>_2" value="D">D、嵌套异常<br>
<hr/>
<input type="button" onclick="my_confirm()" value="考试完成">
</body>
</html></pre>
</div>
<p>--------------------------------------------------------------------------------</p>
<p>result.html</p>
<div class="jb51code">
<pre class="brush:js;">
<!DOCTYPE html>
<html lang="en">
<head>
<<a href="/tag/Meta/" target="_blank" class="keywords">Meta</a> charset="UTF-8">
<title>考试结果@H_<a href="/tag/301/" target="_blank" class="keywords">301</a>_37@
<script src="jquery.min.js"></script>
<script>
<pre><code>//<a href="/tag/huoqu/" target="_blank" class="keywords">获取</a>url中的参数
function getUrlParam(name) {
var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)"); //构造一个含有目标参数的正则表达式对象
var r = window.location.search.substr(1).match(reg); //匹配目标参数
if (r != null) return unescape(r[2]);
return null; //返回参数值
}
function showResult() {
var answer = ["B","D","B","ABC","ACD"];//标准答案
var answer_<a href="/tag/score/" target="_blank" class="keywords">score</a> = [12,12,20,20];//答案的分数
var user_answer = JSON.parse(getUrlParam("json"));//<a href="/tag/huoqu/" target="_blank" class="keywords">获取</a><a href="/tag/yonghu/" target="_blank" class="keywords">用户</a>答案
var ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_num = parseInt(getUrlParam("ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>"));//<a href="/tag/huoqu/" target="_blank" class="keywords">获取</a>单选个数
var check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>_num = parseInt(getUrlParam("check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>"));//<a href="/tag/huoqu/" target="_blank" class="keywords">获取</a>多选个数
var ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_result = 0;//单选分数
var check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>_result = 0;//多选分数
var ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_right_num = 0;//单选答对个数
var check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>_right_num = 0;//多选答对个数
var result = 0;//总分数
var user_answer_result = new Array();//<a href="/tag/yonghu/" target="_blank" class="keywords">用户</a>没到题的答题情况
for (var i = 0; i < user_answer.length; i++) {
if (user_answer[i] == answer[i]) {
if (i < ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_num) {
ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_result = ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_result + answer_<a href="/tag/score/" target="_blank" class="keywords">score</a>[i];
ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_right_num++;
} else {
check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>_result = check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>_result + answer_<a href="/tag/score/" target="_blank" class="keywords">score</a>[i];
check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>_right_num++;
}
user_answer_result[i] = "正确";
} else {
user_answer_result[i] = "<a href="/tag/cuowu/" target="_blank" class="keywords">错误</a>";
}
}
result = check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>_result + ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_result;
//结果展示
var show_result1;
var show_result2;
var show_result3;
var show_result4;
var show_result5;
var show_result6;
show_result1 = "你的答案结果为：";
for (var i = 0; i < user_answer.length; i++) {
show_result1 = show_result1 + (i + 1) + "：" + user_answer_result[i] + "；";
}
show_result2 = "总题目个数：" + user_answer.length;
show_result3 = "答对单选题题目个数：" + ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_right_num + "；得分：" + ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_result;
show_result4 = "答对多选题题目个数：" + check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>_right_num + "；得分：" + check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>_result;
show_result5 = "答错题目个数：" + (user_answer.length - ra<a href="/tag/dio/" target="_blank" class="keywords">dio</a>_right_num - check<a href="/tag/Box/" target="_blank" class="keywords">Box</a>_right_num);
show_result6 = " 本次考试总成绩为：" + result;
$("p#show_result1").html(show_result1);
$("p#show_result2").html(show_result2);
$("p#show_result3").html(show_result3);
$("p#show_result4").html(show_result4);
$("p#show_result5").html(show_result5);
$("p#show_result6").html(show_result6);
}</code></pre>
</script>
</head>
<body>
<h2>考试结束！</h2>
<hr/>
<input type="button" onclick="showResult()" value="查看结果">
<p id="show_result1">
<p>
<hr/>
<p id="show_result2"></p>
<p id="show_result3"></p>
<p id="show_result4"></p>
<p id="show_result5"></p>
<hr/>
<p id="show_result6"></p>
</body>
</html></pre>
</div>
<p>结果如下图：
</p>
<p style="text-align: center"><p class="pic_center"><img title="" alt="这里写图片描述" src="https://files.jb51.cc/file_images/article/201709/2017090316090115.png" /></p></p>
<p><h3>总结</h3></p>
<p>以上所述是小编给大家介绍的JS实现简单的选择题测评系统<a href="/tag/daima/" target="_blank" class="keywords">代码</a>思路详解，希望对大家有所帮助，如果大家有任何疑问欢迎给我留言，小编会及时<a href="/tag/huifu/" target="_blank" class="keywords">回复</a>大家的！</p></div>
<div class="topcard-tags"><a href="/tag/jsp/" class="tag_link" target="_blank">js</a><a href="/tag/xuanzeti/" class="tag_link" target="_blank">选择题</a><a href="/tag/xuanzeticepingxitong/" class="tag_link" target="_blank">选择题测评系统</a></div>
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