Why we use JavaScript void?

javascript: void(0); is used as a placeholder URL to indicate that an onclick event is tied to the link to do the actual action.

What is JavaScript void used for?

Description. This operator allows evaluating expressions that produce a value into places where an expression that evaluates to undefined is desired. The void operator is often used merely to obtain the undefined primitive value, usually using ” void(0) ” (which is equivalent to ” void 0 “).

Should I use JavaScript void?

Conclusion and recommendations. Use the javascript:void(0) if you want to be raw, precise and fast. Use href=”#” and prevent the default event with javascript to be a standards follower. If your link doesn’t go anywhere, don’t use an element.

What does JavaScript void message mean?

A JavaScript void 0 indicates that an error has occurred in an Internet browser due to the pop up blocker. This is a program intended to prevent unwanted advertisements popping up while you’re browsing the Internet.

Is JavaScript void 0 Safe?

It is often used when inserting an expression in a web page might produce some unwanted effect. To remove this effect, “javascript:void(0)” is used. This expression returns undefined primitive value. … But you most likely don’t desire this to happen if you have hooked up some JavaScript thereto link.

IT IS INTERESTING:  What is Java most used for?

Why do we use void?

void (C++)



When used as a function return type, the void keyword specifies that the function does not return a value. When used for a function’s parameter list, void specifies that the function takes no parameters. When used in the declaration of a pointer, void specifies that the pointer is “universal.”

What is Java void?

void is a Java keyword. Used at method declaration and definition to specify that the method does not return any type, the method returns void .

What happens if href is empty?

Although this question is already answered (tl;dr: yes, an empty href value is valid), none of the existing answers references the relevant specifications. An empty string can’t be a URI. However, the href attribute doesn’t only take URIs as value, but also URI references. An empty string may be a URI reference.

How do I fix JavaScript void?

How can I fix javascript:void(0) errors?

  1. Make sure Java is properly installed.
  2. Enable Java.
  3. Reload the webpage.
  4. Remove cookies.
  5. Clear the cache.

How do you use JavaScript void?

If inserting an expression into a web page results in an unwanted effect, then use JavaScript void to remove it. Adding “javaScript:void(0)”, returns the undefined primitive value. The void operator is used to evaluate the given expression. After that, it returns undefined.

What is JavaScript void Null?

Basically what happens is the onclick the function ProcessResponse() is called and the href is set to javascript:void(null) to disable the default behaviour of the link. Most developers are simply used to writing this too: Accept Data

IT IS INTERESTING:  Is Python skill in demand?

How do I turn off href?

To “disable” a link, you can remove its href attribute, or add a click handler that returns false.



We can’t disable it directly but we can do the following:

  1. add type=”button” .
  2. remove the href=”” attribute.
  3. add disabled attribute so it shows that it’s disabled by changing the cursor and it becomes dimmed.

Can I use a tag without href?

Yes, it is valid to use the anchor tag without a href attribute. Yes, you can use class and other attributes, but you can not use target , download , rel , hreflang , and type . If the answer is yes, then yes, you should use without href .

Secrets of programming