|
- What does javascript:void (0) mean? - Stack Overflow
Usage of javascript:void(0) means that the author of the HTML is misusing the anchor element in place of the button element Anchor tags are often abused with the onclick event to create pseudo-buttons by setting href to "#" or "javascript:void(0)" to prevent the page from refreshing
- javascript - What does `void 0` mean? - Stack Overflow
Although undefined can generally be trusted in modern JavaScript environments, there is one trivial advantage of void 0: it's shorter The difference is not enough to worry about when writing code but it can add up enough over large code bases that most code minifiers replace undefined with void 0 to reduce the number of bytes sent to the browser
- difference between void 0 and undefined - Stack Overflow
The void operator is often used merely to obtain the undefined primitive value, usually using "void(0)" (which is equivalent to "void 0") In these cases, the global variable undefined can be used instead (assuming it has not been assigned to a non-default value)
- javascript - What is void 0? - Stack Overflow
The void operator is often used merely to obtain the undefined primitive value, usually using “void(0)” (which is equivalent to “void 0”) In these cases, the global variable undefined can be used instead (assuming it has not been assigned to a non-default value)
- JavaScript: what does void 0 mean? - Stack Overflow
The void operator evaluates the given expression and then returns undefined The void operator is often used merely to obtain the undefined primitive value, usually using “void(0)” (which is equivalent to “void 0”) In these cases, the global variable undefined can be used instead (assuming it has not been assigned to a non-default value)
- JavaScript `undefined` vs `void 0` - Stack Overflow
Where as void 0 is void 0 anywhere Anyways, this technique will surely confuse the JITs which already optimize undefined (FF, Chrome but not IE10) because it's a global constant and even static analysis can see if it's shadowed With this, you turn it into a normal variable look-up and it's not a compile-time constant for sure
- c - Is ((void*)0) a null pointer constant? - Stack Overflow
Which implies, strictly speaking, that (void*)0 is a null pointer constant, but ((void*)0) is not Then: I'm sure that most C implementations do treat a parenthesized null pointer constant as a null pointer constant, and define NULL either as 0, ((void*)0), or in some other manner The two referenced sections say: § 6 3 2 3
- Что такое javascript:void(0);? - Stack Overflow на русском
void(0) — это выражение, получающееся приведением типа константы 0 к void То есть простое ничего не значащее выражение Ссылка в таком виде просто ничего не делает (И это популярная идиома
|
|
|