Why use void(0) in JavaScript? By: Rajesh P.S.In JavaScript, javascript:void(0) is a special syntax used as a placeholder in the href attribute of an anchor <a> tag to prevent the browser from navigating to a ne
To prevent the page from refreshing, you could use JavaScript:void(0).Example of JavaScript:void(0)We have a link that should only do something (display a message) upon two clicks (a double click). If you click once, nothing should happen. We can specify the double click code by using...
JavaScript's double not operatoris basically double use of (!) operator. This is alogical not operator. (!!) operator converts non-Boolean to Boolean. As you know,!operator reverses the logic, i.e., it returnfalsefor!truevalue andtruefor!false. Examples of (!) Operator !false Output: ...
Using Javascript’s void(0), you can show a page won’t refresh or load when a link is clicked. We can use the operand 0 in two ways that are void(0) or void 0. Both of these methods are the same. The JavaScript function:void(0) tells the browser not to do anything, i.e.,...
Clicking Javascript Void Link You can run the Void (0) function in a console to check what it returns Running Void(0) in the Console 1.2 Call A Function Using A Void Operator You can also call any javascript function with the help of the Void operator. To do so, follow the steps: ...
Use javascript: void(0) Example In this example, we have set javascript: void(0) to the href and added a double-click event to the anchor tag. Only when the user doubles clicks on the tag, does the alert trigger. Here page does not refresh because we have set javascript: void(0)....
voidexpression;void(expression); Lets see some examples void0;//returns undefinedvoid(1);//returns undefinedvoid'hello';//undefinedvoid{};//undefinedvoid[];//undefinedvoidmyFunction();void(myFunction()); If you ask why do you need a special keyword just to return undefined instead of just...
Any interface can be functional interface, not merely those that come with Java. To declare your intention that an interface is functional, use the@FunctionalInterfaceannotation. Although not necessary, it will cause a compilation error if your interface does not satisfy the requirements (ie. one ...
These are features the language has had from day one. Using them to emulate features from ES2015 is precisely how they let us use non-standardized featuresnow, and to do sosafely, to boot. As a fun little note, acatchclause creates a scope in JavaScript. This behavior was standardiz...
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