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javascript - 编写代码对我用 Javascript 创建的测验进行评分

转载 作者:行者123 更新时间:2023-11-28 16:03:15 25 4
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我正在尝试自学代码,目前我正忙于我正在开发的一个小型项目。我相信我已经制定了 HTML 代码;然而,我很难让 Javascript/jQuery 做我想做的事情。

我希望 Javascript/jQuery 对我的测验进行评分并将分数打印在不同的页面上。我不确定我的语法是否错误或者我是否进行了错误的调用或者...?

这是 HTML:

<body>

<div class="center">

<div id="questionContainer">

<div id="header">
<h1>State Capitol Quiz</h1>
</div>

<div id="left">

<form action="quiz.html" class="container">
<div class="blank">
<br />
<br />
<p id="one">1.&nbsp; &nbsp;&nbsp;&nbsp;What is the capitol of Michigan?<br />
<div class="tab">
<input type="radio" name="question" value="A" />&nbsp;Lansing<br />
<input type="radio" name="question" value="B" />&nbsp;Richmond<br />
<input type="radio" name="question" value="C" />&nbsp;Austin<br />
<input type="radio" name="question" value="D" />&nbsp;Columbus<br />
</div>
</p>
</div>
</form>

<form action="quiz.html" class="container">
<div class="blank">
<br />
<br />
<p id="two">2.&nbsp; &nbsp;&nbsp;&nbsp;What is the capitol of Virginia?<br />
<div class="tab">
<input type="radio" name="question" value="A" />&nbsp;Lansing<br />
<input type="radio" name="question" value="B" />&nbsp;Richmond<br />
<input type="radio" name="question" value="C" />&nbsp;Lincoln<br />
<input type="radio" name="question" value="D" />&nbsp;Reno<br />
</div>
</p>
</div>
</form>

<form action="quiz.html" class="container">
<div class="blank">
<br />
<br />
<p id="three">3.&nbsp; &nbsp;&nbsp;&nbsp;What is the capitol of Arkansas?<br />
<div class="tab">
<input type="radio" name="question" value="A" />&nbsp;Dallas<br />
<input type="radio" name="question" value="B" />&nbsp;Lincoln<br />
<input type="radio" name="question" value="C" />&nbsp;Little Rock<br />
<input type="radio" name="question" value="D" />&nbsp;Cheyene<br />
</div>
</p>
</div>
</form>

<form action="quiz.html" class="container">
<div class="blank">
<br />
<br />
<p id="four">4.&nbsp; &nbsp;&nbsp;&nbsp;What is the capitol of Arizona?<br />
<div class="tab">
<input type="radio" name="question" value="A" />&nbsp;Juneau<br />
<input type="radio" name="question" value="B" />&nbsp;Honolulu<br />
<input type="radio" name="question" value="C" />&nbsp;Pheonix<br />
<input type="radio" name="question" value="D" />&nbsp;Toledo<br />
</div>
</p>
</div>
</form>

<form action="quiz.html" class="container">
<div class="blank">
<br />
<br />
<p id="five">5.&nbsp; &nbsp;&nbsp;&nbsp;What is the capitol of Florida?<br />
<div class="tab">
<input type="radio" name="question" value="A" />&nbsp;Oakland<br />
<input type="radio" name="question" value="B" />&nbsp;Kansas City<br />
<input type="radio" name="question" value="C" />&nbsp;Tallahassee<br />
<input type="radio" name="question" value="D" />&nbsp;Miami<br />
</div>
</p>
</div>
</form>

<form action="quiz.html" class="container">
<div class="blank">
<br />
<br />
<p id="six">6.&nbsp; &nbsp;&nbsp;&nbsp;What is the capitol of Nebraska?<br />
<div class="tab">
<input type="radio" name="question" value="A" />&nbsp;Omaha<br />
<input type="radio" name="question" value="B" />&nbsp;Lincoln<br />
<input type="radio" name="question" value="C" />&nbsp;Sacramento<br />
<input type="radio" name="question" value="D" />&nbsp;Sab Diego<br />
</div>
</p>
</div>
</form>
</div>

<div id="right">
<form action="quiz.html" class="container">
<br />
<br />
<div class="blank">
<p id="seven">7.&nbsp; &nbsp;&nbsp;&nbsp;What is the capitol of Texas?<br />
<div class="tab">
<input type="radio" name="question" value="A" />&nbsp;Fortworth<br />
<input type="radio" name="question" value="B" />&nbsp;Richmond<br />
<input type="radio" name="question" value="C" />&nbsp;Austin<br />
<input type="radio" name="question" value="D" />&nbsp;Las Vegas<br />
</div>
</p>
</div>
</form>

<form action="quiz.html" class="container">
<div class="blank">
<p id="eight">8.&nbsp; &nbsp;&nbsp;&nbsp;What is the capitol of Alaska?<br />
<div class="tab">
<input type="radio" name="question" value="A" />&nbsp;Tulsa<br />
<input type="radio" name="question" value="B" />&nbsp;Oaklahoma City<br />
<input type="radio" name="question" value="C" />&nbsp;Austin<br />
<input type="radio" name="question" value="D" />&nbsp;Juneau<br />
</div>
</p>
</div>
</form>

<form action="quiz.html" class="container">
<div class="blank">
<p id="nine">9.&nbsp; &nbsp;&nbsp;&nbsp;What is the capitol of Hawaii?<br />
<div class="tab">
<input type="radio" name="question" value="A" />&nbsp;Paris<br />
<input type="radio" name="question" value="B" />&nbsp;Honolulu<br />
<input type="radio" name="question" value="C" />&nbsp;Austin<br />
<input type="radio" name="question" value="D" />&nbsp;Cadilac<br />
</div>
</p>
</div>
</form>

<form action="quiz.html" class="container">
<div class="blank">
<p id="ten">10.&nbsp; &nbsp;&nbsp;&nbsp;What is the capitol of Ohio?<br />
<div class="tab">
<input type="radio" name="question" value="A" />&nbsp;Cleveland<br />
<input type="radio" name="question" value="B" />&nbsp;Green Bay<br />
<input type="radio" name="question" value="C" />&nbsp;Austin<br />
<input type="radio" name="question" value="D" />&nbsp;Columbus<br />
</div>
</p>
</div>
</form>

<div id="buttonDiv">
<input type="button" id="button" value="submit" />
</div>


</div>

</div>

</div>

<div class="center">

<div id="answerSheet">
<p id="score"><h1>Your Score!</h1></p>
<br />
<p>Results:</p>
</div>

</div>

</body>

这是 Javascript/jQuery:

$(document).ready(function(){
$("#button").click(function(){
$("#questionContainer").fadeOut("slow",function(){
$("#answerSheet").fadeIn("slow",function(){
});
});

var numQues= 10;
var numChoices= 4;
var answers = new Array(10);

answers[0] = "Lansing";
answers[1] = "Richmond";
answers[2] = "Little Rock";
answers[3] = "Pheonix";
answers[4] = "Tallahassee";
answers[5] = "Lincoln";
answers[6] = "Austin";
answers[7] = "Juneau";
answers[8] = "Honolulu";
answers[9] = "Columbus";

function getScore(form){
var score = 0;
var currElt;
var currSelection;
for(i = 0; i<numQues; i++){
currElt = i * numChoi;
for(j = 0; j<numChoi; j++){
currSelection = form.elements[currElt + j];
if(currSelection.checked){
if(currSelection.value == answers[i]){
score++;
break;
}
}
}
}

score = math.round(score/numQues * 100);
form.precentage.value = score + "&#37;";
var corrAnswers = "";
for(i = 1; i <numQues; i++){
corrAnswers += i + "." + answers [i - 1] + "\r\n;"
}
form.solutions.value = corrAnswers/numQues * 100 + "%";}

});
});

谢谢

最佳答案

这里有一个使用 HTML 结构和 jQuery 的方法来帮助您:

工作演示:http://jsfiddle.net/jfriend00/Dkdrh/

点击问题的答案(正确或错误),然后点击下面的“分数”按钮,让它为您计算分数。代码如下:

// text value and then question answer value
var answers = [
"Lansing", "A",
"Richmond", "B",
"Little Rock", "C",
"Phoenix", "C",
"Tallahassee", "C",
"Lincoln", "B",
"Austin", "C",
"Juneau", "D",
"Honolulu", "B",
"Columbus", "D"
];

function calcScore() {
var results = {right: 0, wrong: 0, answered: [], unanswered: [], missed: []};
$("form .tab").each(function(index) {
var chosen = $(this).find("input:checked");
if (chosen.length) {
results.answered.push(index);
if (chosen.val() == answers[(index * 2) + 1]) {
results.right++;
results.answered.push(index);
} else {
results.wrong++;
results.missed.push(index);
}
} else {
results.unanswered.push(index);
}
});
return(results);
}

$("#buttonDiv").click(function() {
var results = calcScore();
var str = "Correct: " + results.right + ", Wrong: " + results.wrong + ", Unanswered: " + results.unanswered.length;
$("#results").html(str);
});

关于代码的一些注释:

  1. 答案存储在一个包含文本值和字母值的数组中,以便于比较。您可以使用 2 * index 获取文本答案,使用 (2 * index) + 1 获取答案的字母值。
  2. calcScore() 函数会返回正确的数字、错误的数字、未回答的数字以及回答正确、回答错误和未回答问题的数组。
  3. calcScore() 函数使用 HTML 结构自动跟踪问题编号。
<小时/>

我没有完全遵循您尝试对代码执行的操作,但我看到的一个大问题是您将答案数组中的文本值与 radio 的 .value 进行比较按钮,但单选按钮值设置为 "A""B""C""D" 因此它们永远不会与您数组中的文本匹配。

<小时/>

仅供引用,如果您想了解在 HTML 中使用更自然格式的不同方式,请参阅此处的 HTML 和 CSS:http://jsfiddle.net/jfriend00/H26c8/ 。提示:它使用有序列表来自动对有序问题列表进行编号。

关于javascript - 编写代码对我用 Javascript 创建的测验进行评分,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/16180805/

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