function navtoggle(elementRef) {
if (document.getElementById('nav').className = 'closed') {
document.getElementById('nav').className = 'open'
} else if (document.getElementById('nav').className = 'open') {
document.getElementById('nav').className = 'closed'
};
}
.closed {
display: none;
}
.open {
display: block;
}
#navget {
width: 100px;
height: 100px;
box-shadow: 0px 0px 15px black;
}
<html>
<head>
<link rel="stylesheet" type="text/css" href="style.css">
<title>HTML Library</title>
</head>
<body>
<div id="nav" class="closed">
<ul>
<li><a href="index.html"><h1>HOME</h1></a>
</li>
</ul>
</div>
<button onclick="JavaScript: navtoggle(this);" id="navget">NAV</button>
</body>
</html>
这是Html:
<html>
<head>
<link rel="stylesheet" type="text/css" href="style.css">
<title>HTML Library</title>
</head>
<body>
<div id="nav" class="closed">
<ul>
<li><a href="index.html"><h1>HOME</h1></a></li>
</ul>
</div>
<button onclick="JavaScript: navtoggle(this);" id="navget">NAV</button>
</body>
</html>
JS:
function navtoggle(elementRef){
if (document.getElementById('nav').className = 'closed')
{document.getElementById('nav').className = 'open'}
else if (document.getElementById('nav').className = 'open')
{document.getElementById('nav').className = 'closed'};
}
和CSS:
.closed {
display: none;
}
.open {
display: block;
}
#navget {
width: 100px; height: 100px;
}
我知道只使用复选框会更容易,我也知道如何做到这一点。然而,我希望它只是一个按钮,这样我就可以让它看起来更好。我是JS的新手,所以请不要对这个愚蠢的问题过于苛刻。非常感谢。
在条件语句中,您可以使用"="而不是比较"=="
if (document.getElementById('nav').className == 'closed') {
document.getElementById('nav').className = 'open'
} else if (document.getElementById('nav').className == 'open') {
document.getElementById('nav').className = 'closed'
你的sintax有几个问题我在这里给你做了一个plunker,所以你可以看到所有的细节,但基本上:
function navtoggle(elementRef){
if (document.getElementById('nav').className === 'closed') {
document.getElementById('nav').className = 'open'
}
else if (document.getElementById('nav').className === 'open'){
document.getElementById('nav').className = 'closed'
} //You was using semicolon here and that wasn't parsing well
}
我不知道是否错过了在标题中添加脚本,但请告诉我它是否有效