Javascript Variables - Select and Mix -

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i have 2 3 variables want mix strings , place them table, can't figure out how make variables mix.

what have 

 document.write('<table cellspacing="0" cellpadding="5">')   var = ["string1", "string2"]  var n = ["string3", "string4"]   for(var i=0; <a.length; i++){     document.write('<tr'>     document.write('td' + (a[i]) + (b[i]) +'</td>')     document.write('</td>')  } document.write('</table>')

this create table want doesn't perform function looking for.

it creates table goes:

"string1" "string3"

"string2" "string4'

i'm looking for:

"string1" "string3"

"string1" "string4"

"string2" "string3"

"string2" "string4"

hopefully makes sense. i've tried searching through internet , on stack overflow no avail. how make happen? arrays should able grow maybe hundred each...

you need additional loop - 

for(var = 0; < a.length; i++) {     (var j = 0; j < b.length; j++) {         document.write('<tr'>);         document.write('<td>' + a[i] + b[j] + '</td>');         document.write('</td>');     } }

p.s.: need create elements using document.write? it's ok if it's example, style of element creation discouraged in real development code.


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