[javascript] illegal use of break statement; javascript

When this variable becomes a certain amount i want the loop to stop, but i keep getting the error, "Uncaught SyntaxError: Illegal break statement".

function loop() {
    if (isPlaying) {
        jet1.draw();
        drawAllEnemies();
        requestAnimFrame(loop);
        if (game==1) {

            break;

        }

    }
} 

This question is related to javascript loops break

The answer is


break is to break out of a loop like for, while, switch etc which you don't have here, you need to use return to break the execution flow of the current function and return to the caller.

function loop() {
    if (isPlaying) {
        jet1.draw();
        drawAllEnemies();
        requestAnimFrame(loop);
        if (game == 1) {
           return
        }
    }
}

Note: This does not cover the logic behind the if condition or when to return from the method, for that we need to have more context regarding the drawAllEnemies and requestAnimFrame method as well as how game value is updated


You need to make sure requestAnimFrame stops being called once game == 1. A break statement only exits a traditional loop (e.g. while()).

function loop() {
    if (isPlaying) {
        jet1.draw();
        drawAllEnemies();
        if (game != 1) {
            requestAnimFrame(loop);
        }
    }
}

Or alternatively you could simply skip the second if condition and change the first condition to if (isPlaying && game !== 1). You would have to make a variable called game and give it a value of 0. Add 1 to it every game.


I have a function next() which will maybe inspire you.

function queue(target) {
        var array = Array.prototype;

        var queueing = [];

        target.queue = queue;
        target.queued = queued;

        return target;

        function queued(action) {
            return function () {
                var self = this;
                var args = arguments;

                queue(function (next) {
                    action.apply(self, array.concat.apply(next, args));
                });
            };
        }

        function queue(action) {
            if (!action) {
                return;
            }

            queueing.push(action);

            if (queueing.length === 1) {
                next();
            }
        }

        function next() {
            queueing[0](function (err) {
                if (err) {
                    throw err;
                }

                queueing = queueing.slice(1);

                if (queueing.length) {
                    next();
                }
            });
        }
    }

Examples related to javascript

need to add a class to an element How to make a variable accessible outside a function? Hide Signs that Meteor.js was Used How to create a showdown.js markdown extension Please help me convert this script to a simple image slider Highlight Anchor Links when user manually scrolls? Summing radio input values How to execute an action before close metro app WinJS javascript, for loop defines a dynamic variable name Getting all files in directory with ajax

Examples related to loops

How to increment a letter N times per iteration and store in an array? Angular 2 Cannot find control with unspecified name attribute on formArrays What is the difference between i = i + 1 and i += 1 in a 'for' loop? Prime numbers between 1 to 100 in C Programming Language Python Loop: List Index Out of Range JavaScript: Difference between .forEach() and .map() Why does using from __future__ import print_function breaks Python2-style print? Creating an array from a text file in Bash Iterate through dictionary values? C# Wait until condition is true

Examples related to break

How to break a while loop from an if condition inside the while loop? illegal use of break statement; javascript How can I use break or continue within for loop in Twig template? break statement in "if else" - java Regarding Java switch statements - using return and omitting breaks in each case Is it bad practice to use break to exit a loop in Java? break/exit script Breaking out of a for loop in Java How to break out of while loop in Python? How to kill a while loop with a keystroke?