javascript:void(0) Meaning
We often use code like javascript:void(0), so in JavaScript javascript:void(0) represents What does that mean?
The most critical thing in javascript:void(0) is the void keyword. void is a very important keyword in JavaScript. This operator specifies to calculate an expression but does not return a value.
The syntax format is as follows:
<head>
<script type="text/javascript">
<!--
void func()
javascript:void func()
或者
void(func())
javascript:void(func())
//-->
</script>
</head>
The following code creates a hyperlink, and nothing will happen when the user clicks it.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
</head>
<body>
<a href="javascript:void(0)">单此处什么也不会发生</a>
</body>
</html>
When the user links, void(0) evaluates to 0, but has no effect on Javascript.
In the following example, a warning message is displayed after the user clicks the link:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script type="text/javascript">
<!--
//-->
</script>
</head>
<body>
<p>点击以下链接查看结果：</p>
<a href="javascript:void(alert('Warning!!!'))">点我!</a>
</body>
</html>The difference between href="#" and href="javascript:void(0)"
# contains a location information. The default anchor is #top, which is the top of the web page.
And javascript:void(0) only represents a dead link.
When the page is very long, # will be used to locate the specific location of the page. The format is: # + id.
If you want to define a dead link, please use javascript:void(0).
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