Analysis of the difference between a tag href=# and href=javascript:void(0) in html

Let’s briefly talk about the difference between href=# and href=javascript:void(0). Friends who need it can refer to it

#"contains a location information

The default anchor point is #top is the top of the webpage

And javascript:void(0) only represents a dead link

This is why sometimes the page is very long and the browsing link is obviously #but it jumps to the top of the page

This is not the case with javascript:void(0)

So it is best to use void(0)

or

# when calling the script ##

Wait

Several ways to open a new window link

1.window.open('url')

2.Use a custom function

------------------------------------------------ ------------------------------------

If it is a #, there will be a jump To reach the top situation, several solutions from personal collection:

-------------------------- -------------------------------------------------- --

Use JavaScript with caution:void(0)

void is an operator in JavaScript, which specifies that an expression should be calculated but does not return a value.

void operator. The usage format is as follows:

expression is a JavaScript standard expression to be evaluated. The parentheses outside the expression are optional, but it is a good habit to write them using the void operation. specifies a hyperlink. The expression will be evaluated but nothing will be loaded into the current document. The code below creates a hyperlink and nothing will happen when the user clicks the link. void(0 ) is calculated as 0, but has no effect on JavaScript

That is to say, if you want to perform some processing without refreshing the page as a whole, you can use void(0), but When you need to refresh the page, you need to be careful.

In fact, we can use . The sentence will perform a submit operation. So under what circumstances is void(0) used more often? Without refresh, of course it is Ajax. If you look at the Ajax web page, you will generally see a lot of void(0), :), so when using void(0) ), it’s best to think about whether this page needs to be refreshed as a whole.

The above is the detailed content of Analysis of the difference between a tag href=# and href=javascript:void(0) in html. For more information, please follow other related articles on the PHP Chinese website!