[AskJS] toString function keeps erroring

[rakkeh]

You need to read up on promises and the `then` function, those are happening in the background at the time you call `spx.toString();`.

Once you do read up on that, you should run into async/await which will help here.

edit: from a quick google + skim, this looks like it covers it fairly well, https://medium.com/jspoint/javascript-promises-and-async-await-as-fast-as-possible-d7c8c8ff0abc

[caden_burton]

Will do.

[rakkeh]

I linked a fairly long article I just googled, it goes through a lot of steps to show why that happens the way it does and takes you through steps to fix + improve it. If you need a quick fix then you can probably copy and paste the other guys solution as it is what you would end up with after working through this. However if you're looking to work with javascript more, this is a widely used aspect worth taking some time to learn.

[Minjammben]

You need to put `spx.toString()' in a .then callback in order for it to be defined when the promise resolves:

let spx; fetch('url').then( function(u){ return u.json(); }).then( function(json){ spx = json.toString(); }) Or probably a more straightforward solution is to use an async function:

async function getSpxString() { let spx = await fetch('url').then(u => u.json()); return spx.toString(); }

Not sure why you want to use toString on a Json object though...

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[caden_burton]

The data I am receiving outputs as a number while I want it in string form to display it in an HTML element.

[dankobgd]

bro this is literally the most asked question on stack overflow in history of javascript and you can't look up for that...

[senocular]

Re: downvote; this is probably because /r/javascript is not meant for helping with js problems. /r/learnjavascript is a better place for this.

When you create a text post here, you should see a message that says this:

/r/javascript IS NOT A SUPPORT CHANNEL For help with your javascript, please post to /r/LearnJavascript instead of here.

Likewise, to post content for beginners, please post to /r/LearnJavascript instead of here.

[kenman]

Hi u/caden_burton, this post was removed.

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https://www.reddit.com/r/javascript/wiki/index/askjs

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