如何使用tab函数和jQuery关注列表元素

I am working on a questionnaire for a client. They want the active question that is on focus to be at 100% opacity while the other inactive questions are at 20% opacity. Currently I have the page load, the questions dim to 20% opacity and the first question is at 100%. When I am done with a question and tab to the next question, that active list element stays at 20% opacity until I actually click the list element and/or the input field. How do I make the field or list element active and 100% opacity. Here is what I have so far:

我正在为客户制作调查问卷。他们希望焦点上的活跃问题是100%不透明度,而其他非活动问题是不透明度为20%。目前我有页面加载,问题暗淡到20%不透明度,第一个问题是100%。当我完成对下一个问题的问题和选项卡时,该活动列表元素保持20%不透明度,直到我实际单击列表元素和/或输入字段。如何激活字段或列表元素以及100%不透明度。这是我到目前为止:

<ul>

<li class="main" id="first-element" role="tab" data-toggle="tab">
    <div class="question">This is my first question</div>
    <input type="text" placeholder="First Answer">
</li>

<li class="main" role="tab" data-toggle="tab">
    <div class="question">Second Question</div>
    <input type="text" placeholder="Second Answer">
</li>

<li class="main" role="tab" data-toggle="tab">
    <div class="question">Third Question</div>
    <input type="text" placeholder="Third Answer">
</li>

</ul>

<script>

$(document).ready(function() {
    $('li.main').fadeTo(1000, 0.2);
    $('li#first-element').fadeTo(1000, 1.0);
});

$('li.main').click(function() {
    // Make all list elements (except this) transparent
    $('li.main').not(this).stop().animate({
        opacity: 0.2
    });
    // Make this opaque
    $(this).stop().animate({
        opacity: 1.0
    });
});

</script>

Here is a working solution on JSFiddle thanks to your help: https://jsfiddle.net/urfwap4n/

以下是JSFiddle的工作解决方案,感谢您的帮助:https://jsfiddle.net/urfwap4n/

2 个解决方案

#1

I use keyup for this issue, maybe help you:

我使用keyup来解决这个问题,也许可以帮到你:

var hideshow = function(obj){
    $('li.main').not(obj).stop().animate({
        opacity: 0.2
    });
    // Make this opaque
    $(obj).stop().animate({
        opacity: 1.0
    });
}

$('li.main').click(function() {
    hideshow(this);
});

$('li.main').on('keyup',function(e){
    var code = e.keyCode || e.which;
    if(code == 9) { //Enter keycode
        hideshow(this);
    } 
});

fiddle

#2

You are using the function

您正在使用该功能

$('li.main').click(function() { ...

try

$('li.main').on("focus", function() { ...

Also the on function optimised memory usage better than just using the "focus" function

此外,on函数优化了内存使用,而不仅仅是使用“焦点”功能

#1