Introduction to void operator syntax and usage in javascript

Void is 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:
Copy codeThe Code is as follows:
<A href = "javascript: void (0)" onclick = "func ()"> click me </a>

When you click this link, The onclick function is executed instead of the address jump.
The following method can also achieve the same result
Copy codeThe Code is as follows:
<A href = "#" onclick = "func (); return false;"> click me </a>

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.