The difference between a href= #与 a href=javascript:void (0)

<a href= "#" > click the link, the page will scroll up to the top of the page, # The default anchor point is #TOP

<a href= "javascript:void (0)" onclick= "window.open ()" > Click the link, the page does not move, only the link is opened

<a href= "#" onclick= "Javascript:return false;" > function as above, different browsers will have differences.

Click the link, do not want to roll the page to the top of the page, with href= "javascript:void (0)", do not use href= "#", return false also has a similar effect

The difference between href= "#" and href= "javascript:void (0)"

"#" contains a location. The default anchor point is #top, which is the top of the page, and Javascript:void (0) represents only a dead link. This is why sometimes the page is very long browse the link is obviously # but the jump to the first page and javascript:void (0) This is not the case, so it is best to call the script with void (0) or <input onclick><div onclick> and other ways to open a new window link 1.window.open (' url ') 2. Use Custom Functions < Script>
function Openwin (tag,obj)
{
Obj.target= "_blank";
Obj.href = "web/substation/substation.aspx?stationno=" +tag;
Obj.click ();
}
</script><a href= "javascript:void (0)" onclick= "Openwin (3,this)" >LINK_TEST</a> Window.location.href= ""-------------------------------------------------------------------------------if it's a #, There will be jumps to the top of the situation, the personal collection of several solutions:
1:<a href= "# # # ></a>
2:<a href= "javascript:void (0)" ></a>
3:<a href= "javascript:void (null)" ></a>
4:<a href= "#" onclick= "return false" ></a>
5:<span style= "Cursor:hand" ></span> (as if not shown in FF)---------------------------------------------------- --------------------------- careful use of javascript:void (0)Today, when debugging CGI, the CGI program has been executed, and the final result is correct, but the page is not refreshed. Under the FireFox2.0 test, the result is normal, IE6 but it does not refresh! After a closer look, the CGI page was found to be linked by <a href= "javascript:void (0)" onclick= "Xxx_func ();" ....> only a sample </a> The problem is in this void ( 0) go on! Let's take a look at the meaning of Void (0) in javascript: The void in JavaScript is an operator that specifies that an expression is evaluated but does not return a value.
The void operator uses the following format:
1. Javascript:void (Expression_r_r)
2. Javascript:void Expression_r_r
Expression_r_r is an expression of the JavaScript standard to be computed. Parentheses on the outside of the expression are optional, but writing is a good habit. We can use the void operator to specify hyperlinks. The expression is evaluated but does not load anything at the current document. The code for the polygon creates a hyperlink that doesn't happen when the user clicks it. void (0) evaluates to 0 when the user clicks on the link, but does not have any effect on JavaScript. <a href= "javascript:void (0)" > Click here Nothing will happen </a> that is, to perform some processing, but not the overall refresh of the page, you can use void (0), But in the case of the need to refresh the page, it should be careful. In fact, we can use <a href= "Javascript:void (Document.form.submit ())", this sentence will be a submit operation. Then what situation with void (0) More, no refresh, of course, Ajax, look at the AJAX Web page, you will generally see a lot of void (0),:), so before using void (0), it is best to think about whether this page needs a whole refresh.

When using JavaScript, we usually pass a similar:
<a href= "#" onclick= "javascript: Method" > Submit </a>
Way to invoke the JavaScript method through a pseudo-link. One of the problems with this approach is:
Although clicking on the link does not jump to the page. But the scrollbar rolls up, and the workaround is to return a false.
As shown below:
<a href= "#" onclick= "javascript: method; return false;" > Submit </a>

You can also use # # #

A href= "javascript:void (0)" onclick= "javascript: method; return false;" Submit
Javascript:void (0) will not jump upward:)

One more way is to #this
A href= "#this" onclick= "javascript: Method"

This article is from: http://blog.csdn.net/fightplane/article/details/5190037

I tried it. href= ' # # ' will also jump to the top in IE, Chrome won't. #是默认为 #top, that # #和 # # #是什么意思呢? I can't find it.
Using the * # method produces a history, and the JavaScript pseudo-protocol triggers window.onbeforeunload if it does not mask the default behavior. If the default behavior is masked or the JavaScript pseudo-protocol is better.
As for the addition of Void (0) and, I see that there is an article that is IE6 under no; or void (0), the Click event has no effect. Being tested.

Feel no difference, are used to replace href= ' # ' and href= ' # # # '
Two points will be displayed in the URL, write JavaScript will not
and the scroll bar will jump to 0 when you have a #
Individuals tend to use javascript:;, don't be too tangled

The difference between a href= #与 a href=javascript:void (0)