August 1999
Intermediate to advanced
1488 pages
72h 53m
English
Content preview from Pure JavaScript
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void
JavaScript 1.1, JScript 1.0, ECMAScript 1.0 NES2+, Nav3+, IE3+ Syntax
void(expression) void expression
Description
The void operator is used to evaluate an expression without returning a value. This operator returns undefined and is commonly used in place of the onClick event handler because of various bugs in early UNIX Navigator browsers. Note that Opera browsers do not support this operator.
Example
In Listing 6.271, the void operator is used to keep an <A> link on a page from clicking through anywhere while still invoking the function specified.
Listing 6.271 Using the void Operator to Call a Function
<html> <head> <title>Listing 6.171: Examples of the void Operator</title> <script language="JavaScript"> <!–– Hide // Define ... |
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