切换JavaScript无法正常工作

Question

我只想要一个简单的切换js,所以当你点击导航中的About时会出现about文本,但它现在正在工作oO

JS部分:

<script language="JavaScript" type="text/javascript">
function toggle() {
var about = document.getElementById('about')
if(about.style.display = "none")
{
about.style.display = "block";
}

else
{
about.style.display = "none";
}
}
</script>

HTML:

<header>
...
    <nav><ul>
        <li><a href="index.html" id="active">Home</a></li>
        <li><a href="javascript:toggle()" onClick="toggle()">About me</a></li>
        ...more <li>s...
    </ul></nav>
</header>
<br/>

<div id="about">
aboutme
</div>

CSS:

#about {
    display: none;
    }

我究竟做错了什么？？有谁能够帮我？

Answer 1

在if语句中你必须 have two equal sign

function toggle() {
    var about = document.getElementById('about');
    if(about.style.display == "none")
    {
        about.style.display = "block";
    }
    else
    {
        about.style.display = "none";
    }
}

注意

= you can just assign value to variable
== must be used to compare variables values
=== must be used to compare variables in every aspect (In type too)