【发布时间】：2016-12-26 15:23:06
【问题描述】：
我读了数百万的时间，如果您在自己的 CSS 样式表中定义引导类，您将覆盖它们，因此您创建的元素将具有您想要的预定义样式。
虽然这对于页面的一半是正确的，但我使用 form-control 类的输入按钮不起作用，我无法弄清楚原因，因为其他人都遇到了这个问题。
这是我的问题：
var searcher = document.getElementById('buscador');
searcher.addEventListener("click", function()
{
var master = searcher.parentNode;
searcher.removeChild(searcher.childNodes[0]);
searcher.style.animationName = "expandismo";
searcher.style.animationDuration = "1s";
setTimeout(function(){
master.removeChild(searcher);
var barraSearch = document.createElement('input');
barraSearch.setAttribute('type', 'text');
barraSearch.setAttribute('id', 'barraSearch');
barraSearch.setAttribute('class', 'form-control');
barraSearch.setAttribute('placeholder', 'Buscar...');
var spanCheto = document.createElement('span');
var botonCheto = document.createElement('button');
var secondSpan = document.createElement('span');
spanCheto.setAttribute('class', 'input-group-btn');
botonCheto.setAttribute('class', 'btn btn-default');
secondSpan.setAttribute('class', 'glyphicon glyphicon-search');
secondSpan.setAttribute('aria-hidden', 'true');
botonCheto.appendChild(secondSpan);
spanCheto.appendChild(botonCheto);
master.appendChild(barraSearch);
barraSearch.focus();
}, 1000);
}, false);.container-fluid
{
text-align: center;
}
#toplane
{
color: white;
background-image: url(citybackground.jpg);
background-size: 100% 100%;
min-height: 400px;
}
#botlane
{
}
#headone
{
margin-top: 130px;
color: black;
text-shadow: 0px 0px 12px white, 0px 0px 8px white, 0px 0px 3px white, 0px 0px 5px white;
font-family: "Times New Roman", Times, monospace;
font-size: 60px;
}
#buscador
{
color: #595959;
width: 40px;
height: 40px;
border-radius: 18px;
background-color: lightgrey;
cursor: text;
}
#buscador:hover
{
background-color: lightgrey;
opacity: 1;
}
#buscador:active
{
background-color: white;
}
.input-group
{
width: 100%;
text-align: center;
}
.form-control
{
width: 70%;
border-radius: 18px;
background-color: lightgrey;
height: 40px;
padding-left: 10px;
font-size: 20px;
color: black;
}
.form-control:focus
{
box-shadow: 0px 0px 5px #66d9ff;
box-shadow: 0px 0px 10px #66d9ff;
box-shadow: 0px 0px 8px #66d9ff;
box-shadow: 0px 0px 12px #66d9ff;
}
@keyframes expandismo
{
from{width: 40px}
to{width: 70%}
}<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Price Surfer FAQ</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
<!-- Optional theme -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap-theme.min.css" integrity="sha384-rHyoN1iRsVXV4nD0JutlnGaslCJuC7uwjduW9SVrLvRYooPp2bWYgmgJQIXwl/Sp" crossorigin="anonymous">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/4.2.0/normalize.min.css">
<!-- Latest compiled and minified JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
<link rel="stylesheet" type="text/css" href="wean1.css">
</head>
<body>
<div class="container-fluid" id="toplane">
<h1 id="headone">PRICE SURFER FAQ</h1>
<div class="input-group">
<button id="buscador"><span class="glyphicon glyphicon-search" aria-hidden="true"></span></button>
</div>
</div>
<div class="container-fluid" id="botlane">
</div>
<script type="text/javascript" src="wean1.js"></script>
</body>
</html>【问题讨论】：
-
浏览器 CSS 检查器旨在向您展示这类事情。
-
添加一切！重要的。它覆盖了它
-
@UnknownDeveloper 这是一个可怕的建议！！
-
考虑 CSS 的特殊性。您发布的 HTML 中没有
form-control。 -
@ZimSystem 是 JavaScript 代码添加的类。
标签： javascript html css twitter-bootstrap