// shuffle only elements that don't have "group" class
$ul.find("li[class!='single_question', 'question', 'title', 'text']").each(function() {
意味着所以我试图把我不需要随机化的所有ID放在其中,但它仍然不起作用。 有人可以帮帮我吗?无论如何我还可以添加选项" A",选择" B",选择" C"和选择" D"在每个给定选项前面,即使选项(答案)随机化后,A,B,C,D选项仍然是有序的吗?谢谢。这是代码:
HTML:
<!DOCTYPE html>
<html>
<body>
<script src="JQ.js"></script>
<script src="function.js"></script>
<link href="style.css" rel="stylesheet" />
<div id="quiz_container">
<ul class="quiz_container">
<li class="single_question" data-question-id="1" data-correct-answer="1">
<div class="question">
<h1 class="title">P.1 Grammar Review</h1>
<p class="text">1. "What is your name__"</p>
</div>
<ul class="options">
<li value="1">?</li>
<li value="2">.</li>
<li value="3">,</li>
</ul>
<div class="result"></div>
</li>
<li class="single_question" data-question-id="2" data-correct-answer="b">
<div class="question">
<p class="text">2. "Do you like the banana__"</p>
</div>
<ul class="options">
<li value="a">.</li>
<li value="b">?</li>
<li value="c">,</li>
</ul>
<div class="result"></div>
</li>
</div>
</body>
</html>
JS:
$(document).ready(function () {
/*
* shuffles the array
* @param {Array} myArray array to shuffle
*/
function shuffleArray(myArray) {
for (var i = myArray.length - 1; i > 0; i--) {
var j = Math.floor(Math.random() * (i + 1));
var temp = myArray[i];
myArray[i] = myArray[j];
myArray[j] = temp;
}
return myArray;
}
var $ul, $li, li_content, li_list;
// find all lists to shuffle
$("#quiz_container > ul").each(function () {
$ul = $(this);
li_list = [];
// shuffle only elements that don't have "group" class
$ul.find("li[class!='single_question', 'question', 'title', 'text']").each(function () {
// add content to the array and remove item from the DOM
li_list.push($(this).html());
$(this).remove();
});
// shuffle the list
li_list = shuffleArray(li_list);
while (li_content = li_list.pop()) {
// create <li> element and put it back to the DOM
$li = $("<li />").html(li_content);
$ul.append($li);
}
});
$("#contact_div").show();
});
$(document).on('click', '.single_question .options li', function () {
// Save the question of the clicked option
question = $(this).parents('.single_question');
// Remove If Anyother option is already selected
question.find('.selected').removeClass('selected');
// Add selected class to the clicked li
$(this).addClass('selected');
// selected option value
selected_answer_value = $(this).attr("value");
// Value of correct answer from '.single-question' attribute
correct_answer_value = question.attr("data-correct-answer");
correct_answer_text = question.find('.options').find("li[value='" + correct_answer_value + "']").text();
if (correct_answer_value == selected_answer_value)
result = "<div class='correct'> Correct ! </div>";
else
result = "<div class='wrong'> Correct answer is -> " + correct_answer_text + "</div>";
// Write the result of the question
$(this).parents('.single_question').find('.result').html(result);
// Calculate the score
score_calculator();
});
/**
* It loops through every question and increments the value when "data-correct-answer" value and "option's value" are same
*/
function score_calculator() {
score = 0;
$('.single_question').each(function () {
question = $(this);
if (question.attr('data-correct-answer') == question.find('.selected').attr("value")) {
score++;
}
});
$('.correct_answers').html(score);
}
答案 0 :(得分:0)
看起来你正在使用jQuery,即使这个问题没有标记。如果是这种情况,您可以使用CSS-Tricks的Chris Coyier编写的代码片段shuffle children。
以下是代码的实例。
$.fn.shuffleChildren = function() {
$.each(this.get(), function(index, el) {
var $el = $(el);
var $find = $el.children();
$find.sort(function() {
return 0.5 - Math.random();
});
$el.empty();
$find.appendTo($el);
});
};
$("ul.randomized").shuffleChildren();
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<h4>Static List:</h4>
<ul>
<li>First element</li>
<li>Second element</li>
<li>Third element</li>
<li>Fourth element</li>
</ul>
<h4>Randomized List:</h4>
<ul class="randomized">
<li>First element</li>
<li>Second element</li>
<li>Third element</li>
<li>Fourth element</li>
</ul>
为了将它应用于您自己的代码,您需要做的就是修改jQuery代码段底部的CSS选择器。在您的情况下,ul.options
可能是一个不错的选择。
以下是使用标记的几个示例: