3 dimensional array split in javascript

Question

I have problem with split. I have a long string, and i want fill it in 3 dimensional array.

var str = "normal/zapnout-0-1/vypnout-1-1%nocni/zapnout-2-1/vypnout-3-1*list/film-4-1/manual-5-1/auto-6-1*obyvak/světlo-7-1/krb-8-1/žaluzie-9-1/televize-10-1%světlo-11-1/okno-12-1%světlo-13-1/okno-14-1%pokoj/světlo-15-1";
 var res = str.split("*");
 var res2 = new Array();
 var res3 = new Array();

 for (var i = 0; i < res.length; i++) {
     res2[i] = res[i].split("%");
     for (var t = 0; t < res2[i].length; t++) {
         res3[i]= new Array();
         res3[i][t]=res2[i][t].split("/");
     }
 }
 document.getElementById("demo2").innerHTML = res3;

But problem is, result from res3 is:

,nocni,zapnout-2-1,vypnout-3-1,list,film-4-1,manual-5-1,auto-6-1,,,,pokoj,světlo-15-1

I don't know what the problem is.

please use var res2 = []; much more elegant

codeandcloud
– codeandcloud

2014-03-09 13:50:18 +00:00
Commented Mar 9, 2014 at 13:50 — codeandcloud
– codeandcloud, Commented Mar 9, 2014 at 13:50

helly0d · Accepted Answer · 2014-03-09 14:45:47Z

Try this:

 var str = "normal/zapnout-0-1/vypnout-1-1%nocni/zapnout-2-1/vypnout-3-1*list/film-4-1/manual-5-1/auto-6-1*obyvak/světlo-7-1/krb-8-1/žaluzie-9-1/televize-10-1%světlo-11-1/okno-12-1%světlo-13-1/okno-14-1%pokoj/světlo-15-1";
 var res = str.split("*");
 for(var i=0; i< res.length;i++){
     res[i] = res[i].split("%");
     for(var j=0;j< res[i].length;j++){
         res[i][j] = res[i][j].split("/");
     }
 }
 console.log(res);

Also just for you to know, your code has the issue of reinitializing res3[i] instead of making it res3[i][t]. This should be your code :

 var str = "normal/zapnout-0-1/vypnout-1-1%nocni/zapnout-2-1/vypnout-3-1*list/film-4-1/manual-5-1/auto-6-1*obyvak/světlo-7-1/krb-8-1/žaluzie-9-1/televize-10-1%světlo-11-1/okno-12-1%světlo-13-1/okno-14-1%pokoj/světlo-15-1";
var res = str.split("*");
var res2 = new Array();
var res3 = new Array();

for (var i = 0; i < res.length; i++) {
    res2[i] = res[i].split("%");
    res3[i] = new Array();
    for (var t = 0; t < res2[i].length; t++) {
        res3[i][t]= new Array();
        res3[i][t]=res2[i][t].split("/");
    }
}

But please stop using the variables in this way because for a big application this will be a memory killer.

sabof · Accepted Answer · 2014-03-09 14:40:27Z

1

Try the below. By default JavaScript strips the brackets and quotes when printing arrays.

document.getElementById("demo2").innerHTML = JSON.stringify(res3);

Here is a working implementation of the logic:

var res3 = str.split('*').map(function(segment) {
    return segment.split('%').map(function(segment) {
        return segment.split('/');
    });
});

edited Mar 9, 2014 at 14:40

answered Mar 9, 2014 at 13:48

sabof

8,2024 gold badges32 silver badges53 bronze badges

6 Comments

Deren Over a year ago

That say [[null,["nocni","zapnout-2-1","vypnout-3-1"]],[["list","film-4-1","manual-5-1","auto-6-1"]],[null,null,null,["pokoj","světlo-15-1"]]]

sabof Over a year ago

Then I don't know what you are expecting.

Deren Over a year ago

I want

[[["normal/zapnout-0-1/vypnout-1-1"],["nocni","zapnout-2-1","vypnout-3-1"]],[["list","film-4-1","manual-5-1","auto-6-1"]],[["obyvak","světlo-7-1","krb-8-1","žaluzie-9-1","televize-10-1"],["světlo-11-1","okno-12-1"],["světlo-13-1","světlo-141"],["pokoj","světlo-15-1"]]]

Without null.

helly0d Over a year ago

@sabof I up voted your answer, but try to give an answer without the use of ES5 because these kind of "developers" will start asking about the errors that they receive because of the use of map function in IE 8. ;)

sabof Over a year ago

@helly0d thanks. I just thought that this makes much more sense with .map.

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