I need help creating a loop in dev console in firefox

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I am trying to use the dev console to give mario a mushroom every 5 seconds (in the browser game super mario html5)

I can give mario mushrooms manually by typing marioShroons(mario) but I would like to have it on loop so I don't have to pause the game every time I want a mushroom. I have tried a while loop and set timeout but I can't figure it out. The only coding languages I familiar with are c++ and html. **

while(data.time.amount > 0) {

setTimeout(function() {
}, 1000);

I expected these lines of code to not give me a mushroom, but to automatically kill enemies. But on the first try (the while loop) it froze the tab and I had to reload the page.

With the set timeout, it didn't make any obvious results, it killed all near characters once and then stopped.

The reason your while loop froze the page is because Javascript can only do one thing at a time and you told it to always run your while function, blocking all other Javascript from running on your site.

setTimeout is only run once after a set time (see documentation), if you want to run something every x miliseconds it's better to use setInterval instead.

var intervalID = window.setInterval(killOtherCharacters(), 500); //run this every 500 ms

The JavaScript input interpreter, For single-line entry, you can type JavaScript expressions in the field at the and then Enter , the Console does not immediately execute the input, but Web Console offers a few built-in helper functions that make certain tasks easier. this is useful for dumping the contents of objects and arrays. help()  The only solution is to reset the machine. When opening an fdf file, firefox goes into an infinite loop of creating a new tab, reading a local file (I think a copy of the fdf file), opening another new tab, reading the same file, etc. The only solution is to reset the machine.

Use setInterval if you want killOtherCharacters() to be called repeatedly.

const interval = setInterval(function() {killOtherCharacters() },1000);

Then when you want the function to stop being called:


Looping code - Learn web development - MDN, Programming languages are very useful for rapidly completing repetitive "OK, great, but how does this help me write better JavaScript code? either select "Web Console" from the Web Developer submenu in the Firefox Menu (or Tools menu if you display the menu bar or are on Mac OS X) or press the Ctrl Shift K ( Command Option K on OS X) keyboard shortcut. The Toolbox will appear at the bottom, left, or right of the browser window (depending on your docking settings), with the Web Console activated (it's just called "Console" in the DevTools toolbar ):

You tried using setTimeout, and it only worked once. This is to be expected, because:

Window.setTimeout() sets a timer which executes a function or specified piece of code once the timer expires

From MDN

What you need to do is use setInterval:

The setInterval() method...repeatedly calls a function or executes a code snippet, with a fixed time delay between each call.

From MDN

So in your console, you should write this:

setInterval(killOtherCharacters, 1000);

(I removed the anonymous function because it wasn't needed - you only need an anonymous function if you're passing parameters or doing multiple things. You do need to remove the () for this though).

And if you want to stop the function from executing, assign a variable to the interval:

var killCharacters = setInterval(killOtherCharacters, 1000);

Then call clearInterval upon this variable to clear the interval (stop the loop):


Loops and iteration - JavaScript - MDN, Learn web development · Tutorials · References · Developer Guides Send Feedback · Get Firefox help · Get web development help The statements for loops provided in JavaScript are: let i = 0; do { i += 1; console.log(i); } while (i < 5); Make sure the condition in a loop eventually becomes false  This is the second post in a series of productivity tips and tricks to help you debug web applications with Firefox Devtools. It shows you 5 tips & tricks for working with the Web Console and the Console API in the Firefox Developer Tools.

for - JavaScript, The for statement creates a loop that consists of three optional expressions, var i = 0; for (; i < 9; i++) { console.log(i); // more statements }. While this api is currently a work-in-progress, there are usable portions of page inspector and debugger that may be used currently.. Introduction. The DevTools API provides a way to register and access developer tools in Firefox.

Step through code, If you want to turn this feature off, since Firefox 71 you can do so by going to about:config in a new tab, setting the devtools.debugger.features. console.log('Walking east one step'); } There are many different kinds of loops, but they all essentially do the same thing: they repeat an action some number of times. (Note that it's possible that number could be zero!) The various loop mechanisms offer different ways to determine the start and end points of the loop.

Loop - MDN Web Docs Glossary: Definitions of Web , A loop is a sequence of instructions that is continually repeated until a certain item of data and changing it, and then making sure some condition is checked Learn web development · Tutorials · References · Developer Guides for(var i = 0; i < 10; i++){ console.log(i) } //This loop will print numbers 0-9,  Create a Snippet through the Command Menu. Focus your cursor somewhere inside of DevTools. Press Control+Shift+P or Command+Shift+P (Mac) to open the Command Menu. Start typing Snippet, select

  • how do I make a loop but to give mario a mushroom
  • @Tnings How can you give Mario a mushroom? Is there a function like giveMarioMushroom()? Please clarify.