What is return false in HTML?
Chrome works with the return false method now. It stops following the link in the onclick event of an img element.
What is onclick return false?
Return false tells the browser not to continue with the standard flow. In the case where a command button has an onclick handler, returning false from that handler would stop the command button submitting the form.
What return false does?
5 Answers. return false inside a callback prevents the default behaviour. For example, in a submit event, it doesn’t submit the form. return false also stops bubbling, so the parents of the element won’t know the event occurred.
What’s the effect of adding return false to a click event listener?
If there is a return false statement then there in an event listener for that alert message, it may correspond to not executing the default set of instructions . The return value of the event handler is used to determine if the default (desired) browser behavior should take place or not.
Do I need to return false?
You use return false to prevent something from happening. So if you have a script running on submit then return false will prevent the submit from working. When a return statement is called in a function, the execution of this function is stopped. If specified, a given value is returned to the function caller.
What does preventDefault () do?
The preventDefault() method of the Event interface tells the user agent that if the event does not get explicitly handled, its default action should not be taken as it normally would be.
When should I call preventDefault?
Use preventDefault(); if you want to “just” prevent the default browser behaviour. Use return false; when you want to prevent the default browser behaviour and prevent the event from propagating the DOM. In most situations where you would use return false; what you really want is preventDefault() .
Using return causes your code to short-circuit and stop executing immediately. The first return statement immediately stops execution of our function and causes our function to return true . The code on line three: return false; is never executed.
The preventDefault() method cancels the event if it is cancelable, meaning that the default action that belongs to the event will not occur. For example, this can be useful when: Clicking on a “Submit” button, prevent it from submitting a form.
How do you return true and return false?
This is important. Using return causes your code to short-circuit and stop executing immediately. The first return statement immediately stops execution of our function and causes our function to return true . The code on line three: return false; is never executed.