Question

I have the following:

function refreshGrid(entity) {
    var store = window.localStorage;
    var partitionKey;
    ...
    ...

I would like to exit from this function if an “if” condition is met. How can I exit? Can I just say break, exit or return?

Answer 1

if ( condition ) {
    return;
}

The return exits the function returning undefined.

The exit statement doesn’t exist in javascript.

The break statement allows you to exit a loop, not a function. For example:

var i = 0;
while ( i < 10 ) {
    i++;
    if ( i === 5 ) {
        break;
    }
}

This also works with the for and the switch loops.