A void is an inbuilt function that returns undefined, just like an undefined function in JavaScript. However, it is totally different from the undefined function. We might need this function when we don’t want anchor text to navigate us to a page. This function disables the basic functionalit...
JavaScript is referred to as the native language of the web, and the web is expanding at a very rapid pace because of this. JavaScript is receiving a huge amount of attention from developers who are consistently trying to improve its performance and also aiming at expanding its functionality. ...
void(0) returns undefined. void(0) means void(false). Even if 1+1 is 2, void makes it undefined. Click Me In the above snippet, the code inside the void executes. Without using javascript: void(0) Example In this example, we have set # to the href and added a double-click event...
JavaScript void is often used when, inserting an expression into a web page may produce an unwanted side-effect.By using JavaScript:Void(0), you can eliminate the unwanted side-effect, because it will return the undefined primative value....
login 我已经看过很多次这样的href,但我不知道这意味着什么。 Thevoidoperator evaluates the given expression and then returnsundefined. Thevoidoperator is often used merely to obtain theundefinedprimitive value, usually using “void(0)” (which is equivalent to “void 0”). In these cases, the gl...
In JavaScript, javascript:void(0) is a special syntax used as a placeholder in the href attribute of an anchor tag to prevent the browser from navigating to a new page when the link is clicked. It's often used in cases where the link doesn't have a valid destination or when the ...
So, what is the justification of using thevoidoperator? 回答 The JavaScript, thevoidoperator is used to explicitly return undefined. Its a unary operator, meaning only one operand can be used with it. You can use it like shown below — standalone or with a parenthesis. ...
What is Unobtrusive JavaScript? By: Rajesh P.S.Unobtrusive JavaScript embodies a methodology wherein the JavaScript language is skillfully partitioned between Document Content and Script Content. This distinction serves to delineate these elements clearly and effectively. Just as we adhere to the ...
Javascript Interview Questions and Answers Inheritance in Java How to Reverse a String in Java- With Examples Serialization in Java (Examples & Methods) What is Socket Programming in Java? All You Need to Know HashMap in Java Top Java Frameworks: Introduction, Features, and Advantages Java Compil...
void function() { console.log('boo!'); // expected output: "boo!" }(); https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/void From the example above it is very clear that IIFE can also affect efficiency and performance, because the function that is exp...