how to make string as array in java script?

Question

I have a string value like:

1,2,3;4,5,6;7,8,9;a,b,c;d,e,f;g,h,i

I need to convert it into array in JavaScript like

1 2 3
4 5 6 
7 8 9
etc.

Can any one please suggest me a way how to do this?

• karim79: Google for "Javascript Split"
• redmoon7777: do you mean multidimensional array?
• mrmo123: here's a previous answer that may help stackoverflow.com/questions/5163709/…

Answer 1

You are looking for String.split. In your case, you need to split twice. Once with ; to split the string into chunks, then separately split each chunk with , to reach the array structure you are looking for.

function chunkSplit(str) {
 var chunks = str.split(';'), // split str on ';'
 nChunks = chunks.length, 
 n = 0;
 for (; n < nChunks; ++n) { 
 chunks[n] = chunks[n].split(','); // split each chunk with ','
 }
 return chunks;
}
var arr = chunkSplit("1,2,3;4,5,6;7,8,9;a,b,c;d,e,f;g,h,i");

• jack blank: what exactly is the first ";" for in the line for (; n < nChunks; ++n) {? is that there to find the character ";". I am asking because I usually see some sort of expression before the ";" in a for loop

Answer 2

If you need a multi-dimensional array you can try :

var array = yourString.split(';');
var arrCount = array.length;
for (var i = 0; i < arrCount; i++)
{
 array[i] = array[i].split(',');
}

Answer 3

Try the following:

var yourString = '1,2,3;4,5,6;7,8,9;a,b,c;d,e,f;g,h,i';
var array = [];
yourString.split(';').forEach(function(value) {
 array.push(value.split(','));
});

• jsFiddle Demo
• Note: .forEach() not supported in IE <=8

• nikc.org: This does NOT work. Did you even try running your code? The value of split in your for...in loop is the index in the array, not the value.
• nikc.org: Might be worth mentioning that Array.forEach does not have universal browser support. kangax.github.com/es5-compat-table

Answer 4

The following split command should help:

 yourArray = yourString.split(";");

• pimvdb: Note that there are also commas. It looks like the OP wants to split the results again to get a two-dimensional array.