Question

Code:

var testarray = [];
var test1 = "ashutosh";
var test2 = "ashutosh2";

if (test1 != test2) {
  testarray.push = "ashutosh3";
  testarray.push = "ashutosh4";
  alert(testarray.length);
}

if (testarray.length != 1) {
  alert(testarray.length);
  alert(testarray[testarray.length - 1]);
  alert(testarray[testarray.length - 2]);
}

But when all the alerts are showing up undefined. I have no clue why is this happening.

Answer 1

push is a function, not a property, so instead of

testarray.push="ashutosh3";

it’s

testarray.push("ashutosh3");

Here’s how I’d update that code, FWIW, but I think the only substantive change is doing the push correctly and using >= 2 rather than != 1 in the length check at the end (since otherwise if the array is empty you’re looking at entries -1 and -2, which will be undefined):

var testarray = [];
var test1 = "ashutosh";
var test2 = "ashutosh2";

if (test1 !== test2) {
  testarray.push("ashutosh3");
  testarray.push("ashutosh4");
  alert(testarray.length);
}

if(testarray.length >= 2) {
  alert(testarray.length);
  alert(testarray[testarray.length-1]);
  alert(testarray[testarray.length-2]);  
}