Void operator syntax and usage in javascript _ javascript skills

Source: Internet
Author: User
Void is an operator in javascript. void calculates the expression value, but discards the return value of the expression, if you are interested, you can refer to void, which may be helpful to you, as an operator in javascript. The syntax is as follows:
Javascript: void (expression)
Javascript: void expression
Void calculates the value of the expression, but discards the return value of the expression.
This expression is often used to convert a link into a dead link:

The Code is as follows:


Click me


When you click this link, The onclick function is executed instead of the address jump.
The following method can also achieve the same result

The Code is as follows:


Click me


However, "#" contains a location information, which is returned to the top of the webpage by default. To avoid this situation, you can add a return false statement in The onclick statement.

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