第一次在这里发帖，刚刚接触编程，只有 3 天的经验。我在将默认按钮设置为active而不仅仅是 时遇到了一些麻烦focused。我曾尝试阅读有关此问题的其他帖子，但由于缺乏经验，我很难将 2 和 2 放在一起。该页面将进入方形空间，因此我尝试在一个代码块中完成所有操作。我不希望当用户单击网站的其他部分时按钮停用（目前正是这种情况）。（即使他们点击空白区域）。非常感谢您给我的任何建议。/* Change Button Size/Border/BG Color And Align To Middle */.services { width: 210px; height: 135px; padding: 0px; border: 0px; outline: 0px; cursor: pointer; color: #999999; font-size: 20px; text-align: center; background: url("https://i.ibb.co/G5mn9nY/Services-Buttons-Combined-Big.png") no-repeat; /* As all link share the same background-image */}/* Set Mouseover Button Text and Current/Active Color */.services:focus,.services:hover,.services:active { color: black;}/* Position Button Text*/divtext { position: relative; top: 90px;}/* Div Wrapper to format button areas. */.servicesbuttonwrapper { display: flex; flex-flow: row wrap; justify-content: space-around;}/* Div Wrapper to format revealed description text. */.servicestextwrapper { text-align: left; margin-left: 100px; margin-right: 32px; top: 50px; position: relative;}/* Change Image rollover position depending On Focus. */.assets { background-position: 0 0;}.assets:focus,.assets:hover,.assets:active { background-position: 0 -135px;}.viz { background-position: 0 -270px;}.viz:focus,.viz:hover,.viz:active { background-position: 0 -405px;}.software { background-position: 0 -540px;}.software:focus,.software:hover,.software:active { background-position: 0 -675px;}.more { background-position: 0 -810px;}.more:focus,.more:hover,.more:active { background-position: 0 -945px;}/* Hides intitial button descriptions. */#assets,#viz,#software,#more { display: none;}
1 回答
炎炎设计
TA贡献1808条经验 获得超4个赞
欢迎来到堆栈溢出。
因此首先要注意的是， :active 伪元素仅在用户单击（鼠标按下）某物时应用。
最常见的方法是应用 css 类“active”，并在您想要设置样式的任何元素上使用 .active 选择器。
现在，按钮受到悬停和焦点的影响，因此当用户单击按钮外部时，它将失去焦点。
您可以通过更改一些 CSS 和 javascript 来解决这个问题。编辑过的部分标记为/* EDIT */
我不建议最后一行利用您的函数传入元素 ID 的事实，并且该元素 ID 与用于选择它的按钮的类相匹配。更好的方法是show将 Javascript 事件作为参数，然后使用 event.target 来获取单击的 a 标签，然后使用 agetElementById之类的data-target="more"属性。这将允许您更改 CSS 类，而无需将该类耦合到 Javascript 的实现
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Services</title>
</head>
<style>/* Change Button Size/Border/BG Color And Align To Middle */
.services {
width:210px;
height:135px;
padding: 0px;
border:0px;
outline:0px;
cursor: pointer;
color: #999999;
font-size: 20px;
text-align: center;
background: url("https://i.ibb.co/G5mn9nY/Services-Buttons-Combined-Big.png") no-repeat; /* As all link share the same background-image */
}
/* Set Mouseover Button Text and Current/Active Color */
/* EDIT */
.services:focus, .services:hover, .services.active {
color: black;
}
/* Position Button Text*/
divtext {
position: relative;
top: 90px;
}
/* Div Wrapper to format button areas. */
.servicesbuttonwrapper {
display: flex;
flex-flow: row wrap;
justify-content: space-around;
}
/* Div Wrapper to format revealed description text. */
.servicestextwrapper {
text-align: left;
margin-left: 100px;
margin-right: 32px;
top: 50px;
position: relative;
}
/* Change Image rollover position depending On Focus. */
.assets {
background-position: 0 0;
}
/* EDIT */
.assets:focus, .assets:hover, .assets.active {
background-position: 0 -135px;
}
.viz {
background-position: 0 -270px;
}
/* EDIT */
.viz:focus, .viz:hover, .viz.active {
background-position: 0 -405px;
}
.software {
background-position: 0 -540px;
}
/* EDIT */
.software:focus, .software:hover, .software.active {
background-position: 0 -675px;
}
.more {
background-position: 0 -810px;
}
/* EDIT */
.more:focus, .more:hover, .more.active {
background-position: 0 -945px;
}
/* Hides intitial button descriptions. */
#assets, #viz, #software, #more {
display: none;
}
</style>
<body>
<!--Div wrapper so we can format positioning of buttons in CSS-->
<div class="servicesbuttonwrapper">
<!--Base buttons plus javascript functions for click behavior. This used to be <button class> instead of <a href> but I read somewhere this is better... seems to work ok.-->
<a href="javascript:void(0)" id="defaultstate" onclick="show('software');" class="services software"><divtext>INTERACTIVE SOFTWARE</divtext></a>
<a href="javascript:void(0)" onclick="show('assets');" class="services assets"><divtext>3D ASSET CREATION</divtext></a>
<a href="javascript:void(0)" onclick="show('viz');" class="services viz"><divtext>3D VISUALIZATION</divtext></a>
<a href="javascript:void(0)" onclick="show('more');" class="services more"><divtext>IMAGE CREATION</divtext></a>
</div>
<!--Base description text.-->
<div class="servicestextwrapper">
<div id="assets">3D Assets Description.</div>
<div id="viz">3D Visualization Description.</div>
<div id="software">Interactive Software Description.</div>
<div id="more">And More Description.</div>
</div>
<!--Javascript function to hide/show elements based on button press.-->
<script type="text/javascript">
/* EDIT */
function show(elementId) {
document.getElementById("assets").style.display = "none";
document.getElementById("viz").style.display = "none";
document.getElementById("software").style.display = "none";
document.getElementById("more").style.display = "none";
document.getElementById(elementId).style.display = "block";
// get a list of the buttons with ".services" class
const buttons = document.querySelectorAll(".services");
for(let button of buttons) {
// remove ".active" class
button.classList.remove("active");
}
// add the active class to element button specified by argument
document.querySelector("." + elementId).classList.add("active");
}
</script>
<!--Javascript function to set first button as focus.-->
<script>
window.onload=function(){
document.getElementById("defaultstate").click();
};
var linkToFocus = document.getElementById('defaultstate');
linkToFocus.focus();
</script>
</body>
</html>
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