javascript - How to build a simple string from a multidimensional array? -

basically, have multidimensional array need build simple string.

quite easy question, although has been eating away @ me quite time since can't seem nail it.

here example of how array 3 questions within it:

[["question1","answer1","answer2","answer3","answer4"],["question2","answer1","answer2","answer3","answer4"],["question3","answer1","answer2","answer3","answer4"]] 

for example, d.rows[0][0] "question1" , d.rows[2][3] "answer3", clarify.

here how must saved string as:

question1,answer1,answer2,answer3,answer4  question2,answer1,answer2,answer3,answer4  question3,answer1,answer2,answer3,answer4  

each element must have comma between them, , each question must separated line-break.

this have not working:

var fullstring; (i = 0; < csvarray.length; ++i)  {     second = secondarray[i];     (j = 0; j < second.length; ++j)      {         fullstring += entry[j] + "'";     }     fullstring += "\n"; } 

thanks in advance!

try this

var s,a=[["question1","answer1","answer2","answer3","answer4"],"question2","answer1","answer2","answer3","answer4"],["question3","answer1","answer2","answer3","answer4"]]; for(i=0; < a.length; i++){     s=(s)?s+"\n\r"+a[i].join():a[i].join(); } 

jsfiddle example

in own example: since going straight adding fullstring, should have empty string value, otherwise end undefined in beginning.

var fullstring=""; 

this part second = secondarray[i]; should have been

var second = csvarray[i]; 

and in same way fullstring += entry[j] + "'"; should have been

fullstring += second[j] + ",";