/prog/ -[code] var a0 = document.getElementsByTagName("audio")[0];var a1 = document.getElementsByTagName("audio")[1];var a2 = document.getElementsByTagName("audio")[2];var a3 = document.getElementsByTagName("audio")[3];[/code]How to do this in a fo

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File: 1450105938013.png (106.97 KB,1649x494,1649:494,2015-12-13-130936_1649x494….png)

Anonymous 12/14/15 (Mon) 15:12:16 642eb3 No.3717

 
var a0 = document.getElementsByTagName("audio")[0];
var a1 = document.getElementsByTagName("audio")[1];
var a2 = document.getElementsByTagName("audio")[2];
var a3 = document.getElementsByTagName("audio")[3];

How to do this in a for loop?

____________________________

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Anonymous 12/15/15 (Tue) 01:02:43 642eb3 No.3719

Go back to school.

Read a book.

Do any fucking beginner's tutorial.

If you are stumped on this, you really need to be reading, not asking questions on 8chan.

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Anonymous 12/15/15 (Tue) 02:35:23 642eb3 No.3720

The answer: you can't do that in a for loop. Your question is focused too heavily. Step back and show more code, and this awfulness can be removed.

For example, if all you want to is frob all the audios on the page, i.e., if your code goes on to say frob(a0); frob(a1); etc., then you can do this:

var audio = document.getElementsByTagName("audio")
for (var i = 0, length = audio.length; i < length; i++) {
  frob(audio[i])
}

Actually b/c JavaScript you totally can do exactly what you wrote with a for loop, assuming global scope on those vars, but I'm not going to tell you how, because it's fucking stupid.

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Anonymous 12/20/15 (Sun) 23:05:30 642eb3 No.3746

You don't.

You keep those things in the array.

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Anonymous 01/02/16 (Sat) 02:43:36 642eb3 No.3801


#def MAGIC 69

T a[MAGIC];
	// magically allocated

for (auto i = 0; i < MAGIC; ++i) {
	a[i] = thingy.get("tagname")[i];
		// magically copied
}

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Anonymous 06/03/16 (Fri) 08:13:09 642eb3 No.4257

File: 1464941590417.webm (7.83 MB,640x356,160:89,big guys song.webm)

>>3717

>var OPisAFaggot = document.getElementsByTageName("audio")

>access variables by doing OPisAfaggot[X], where X = what ever the fuck one you want

>>3719

To be fair I had this problem too when I was a noobfag. I wanted to create new variables using a for loop but didn't know how the fuck to do that. Now I know you can't and must use an array.

>>3801

Anon, please. I'm 99% sure getElementsByTagName returns a populated array so you don't have to declare an empty array and assign all of the elements using a for loop. What you're using isn't even Javascript you fag.

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Anonymous 06/17/16 (Fri) 04:12:37 642eb3 No.4282

File: 1466136757701.png (22.02 KB,564x482,282:241,H E L L O W O R L D.png)

>>3717

Hand copy this C code, compile it, then run it.

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Anonymous 06/29/16 (Wed) 07:15:41 642eb3 No.4303

>>4282

Is this a virus?

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Anonymous 06/30/16 (Thu) 13:38:25 642eb3 No.4304

>>4303

Please don't compile that code. It right fucked my computer… I'm getting a new HD today.

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Anonymous 01/03/17 (Tue) 21:29:08 642eb3 No.4527

>>4257

>To be fair I had this problem too when I was a noobfag. I wanted to create new variables using a for loop but didn't know how the fuck to do that. Now I know you can't and must use an array.

You're still a noob. Learn how namespaces work, idiot.

>>3717

Sure, OP. Other fags here don't seem to know how to answer basic questions because they're actually stumped as to how to perfectly emulate your code. It's easy, actually.


for (var x = 0; x <= 3; x++) window['a' + x] = document.getElementsByTagName("audio")[x];

After that code runs, you can then reference a0, a1, a2, and a3 as normal.

You might want to consider making a namespace of their own to go into though, that way they won't just be tossed into the same group as everything else.

>>3720

Get off this board, idiot. Don't answer questions if you don't know the answer.

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