Javascript: void (0) and #

In JavaScript, void is an operator that specifies to calculate an expression but does not return a value.

The format of the void operator is as follows:

1. javascript: void (expression)

2. javascript: void expression

For example, <a href = "javascript: void (0)"> Click here to see the effect </a> // It is actually equivalent to a dead link.

For example, <a href = "javascript: void (document. Form. Submit ()"> click here to submit a form </a> // The form is submitted when the user clicks

 

Note: <a href = "#"> click here </a> and <a href = "javascript: void (0)"> click here </a>:

# It only contains a location information. The default anchor is # top, that is, the top of the web page.

Javascript: void (0) is a dead link.

 

 

Http://blog.csdn.net/jiang_jiajia10/archive/2008/11/24/3361467.aspx