Get names and values from array in Javascript

Question

I want to get the values of an array that looks like this:

t = new Object();
t.erg = new Array();
t.erg['random1'] = "something1";
t.erg['random2'] = "something2";
t.erg['random3'] = "something3";
t.erg['random4'] = "something4";

But i want to get the random names and then the values of them through a loop, I can't find a way to do it :/

• Andy E: possible duplicate of How to list the properties of a javascript object. NB, you're using Array incorrectly.

Answer 1

You would use the other form of the for loop:

for (x in t.erg) {
 if (t.erg.hasOwnProperty(x)) {
 alert("key is " + x + " value is " + t.erg[x]);
 }
}

Answer 2

To get a random value, you could get a random number and append it to the end of the string "random".

Something like this might work:

 var randomVal = "random" + Math.floor(Math.random()*4);

Answer 3

To get the the names of something you would use a for in loop, but you are actually creating to objects not an object and an array. Why not use literals like this

t={
 erg:{
 'random1':'something1',
 'random2':'something2'
 }
}
for(var x in t.erg){
 //in the first round of the loop
 //x holds random1
}