Javascript: array.push is undefined

Question

I have my code:

var name = [];
var mark1 = [];
var mark2 = [];
var mark3 = [];
var total = [];
count = 0
count2 = 0
var i = 0;
while (count != 2) {
  var nam = prompt("Enter name:")
  name.push(nam);
  var mk1 = prompt("Enter mark 1:");
  var mk1 = parseInt(mk1);
  mark1.push(mk1);
  var mk2 = prompt("Enter mark 2:");
  var mk2 = parseInt(mk2);
  mark2.push(mk2);
  var mk3 = prompt("Enter mark 2:");
  var mk3 = parseInt(mk3);
  mark3.push(mk3);
  var tot = mk1 + mk2 + mk3;
  total.push(tot)
  count = count + 1
  console.log(mk1 + mk2 + mk3);
  console.log(nam);
  console.log("the count is " + count)
};

When I run it I get an error:

Uncaught TypeError: undefined is not a function

on Line 12 which is name.push(nam);

I have looked around but I am not sure what I am doing wrong. Help appreciated.

one important thing when asking for help is to make sure your code's properly indented. Humans like to be able to read things easily. Another is to confirm that's really what's going wrong. If we drop this code into jsbin.com or jsfiddle.net, it works just fine — Mike 'Pomax' Kamermans
– Mike 'Pomax' Kamermans, Commented Nov 23, 2014 at 18:35
@BeNdErR your link wraps the code in a function, protecting the identifier conflict of the var name with window.name — Paul S.
– Paul S., Commented Nov 23, 2014 at 18:40
May be you have skipped this line var name = [];, because of this line, this type of error is generated. — Varun Chakervarti
– Varun Chakervarti, Commented Nov 23, 2014 at 18:41

didierc · Accepted Answer · 2014-11-23 18:43:07Z

9

This is an interesting one. It all boils down to an unfortunate choice of variable name. Unfortunately name is a property of the window object. When you refer to name you are actually referring to window.name, not the array called name. If you rename name to something else, it should work just fine.

edited Nov 23, 2014 at 18:43

didierc

14.8k3 gold badges35 silver badges52 bronze badges

answered Nov 23, 2014 at 18:38

Matthew Sant

1,63111 silver badges10 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Javascript: array.push is undefined

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related