javascript - How to add an object into an object -

i trying add object object.

my previous post helped me on array issue need add object object too.

i have

var temp = {};  for(var i=0; i<test.length; i++){     console.log(test[i])     console.log(product[i])     temp.test[i] =product[i]; } 

both of console.log show values. however, getting

"uncaught typeerror: cannot set property '0' of undefined" temp.test[i] =product[i]

can me out on this? lot

var temp = {test:[], product:[]}; var test = ['a','v']; var product = ['a2','v2']; for(var i=0; i<test.length; i++){     console.log(test[i])     console.log(product[i])     temp.test.push(product[i]); } 

you need define property test , product first , push data.

but, not have loop insert every values. can set whole collection in 1 shot.

var testcollection = ['value 1', 'value 2']; var productcollection = ['value 10', 'value 20']; var temp = {     test:testcollection   , product:productcollection };