我正在为类进行测验,并且对JavaScript有点新。我需要让问题的背景颜色交替出现,我已经找到了答案。当每个问题被正确回答后,他们也需要改变颜色,因此当单击正确的单选按钮时,问题的背景颜色会立即发生变化,例如从白色变为蓝色。我相信这很简单,我似乎无法弄清楚从哪里开始做。任何帮助正确的方向表示赞赏。这里是我的测验的例子,以及我目前对Javascript的评价。进行测验并需要根据Javascript中的正确选择更改背景颜色
if (jQuery) {
var checkAnswers = function() {
var answerString = "";
var answers = $(":checked");
answers.each(function(i) {
answerString = answerString + answers[i].value;
});
$(":checked").each(function(i) {
var answerString = answerString + answers[i].value;
});
checkIfCorrect(answerString);
};
var checkIfCorrect = function(theString) {
if (parseInt(theString, 16) === 811124566973) {
var d = document.getElementById("question1");
var e = document.getElementById("question3");
var f = document.getElementById("question5");
var g = document.getElementById("question7");
var h = document.getElementById("question9");
var i = document.getElementById("question2");
var j = document.getElementById("question4");
var k = document.getElementById("question6");
var l = document.getElementById("question8");
var m = document.getElementById("question10");
d.className += "correctOdd";
e.className += "correctOdd";
f.className += "correctOdd";
g.className += "correctOdd";
h.className += "correctOdd";
i.className += "correctEven";
j.className += "correctEven";
k.className += "correctEven";
l.className += "correctEven";
m.className += "correctEven";
$("h1").text("You Win!");
$("canvas").show();
}
};
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="quiz">
<div id="question1">
<div class="question">
Which is not a main file type that we use to make websites?
</div>
<input type="radio" name="question1" value="a" />
<label>.html</label>
<input type="radio" name="question1" value="b" />
<label>.exe</label>
<input type="radio" name="question1" value="c" />
<label>.js</label>
<input type="radio" name="question1" value="d" />
<label>.css</label>
</div>
目前还不清楚你想如何改变颜色。你能进一步解释吗? – vinit
我很抱歉不清楚。基本上,一旦我点击问题的正确答案,问题的背景颜色和答案就需要改变。 – TonyM