CODEWITHSUNDEEP
javascriptarrays
Joenel de Asis
Joenel de Asis

Reputation: 1459

Arrays in Javascripts

I have an array that is defined like so: var alpha = ['a', 'b', 'c'];. How do I print the array which results in something like this?

a
b
c

I have my own code but it doesn't solve my problem because it prints the value of an array like this:

a,b,c

Upvotes: -1

Views: 107

Answers (3)

Floris
Floris

Reputation: 46365

Join the elements together with a carriage return:

var alpha = ['a', 'b', 'c', 'd'];
var oneString = alpha.join('\n');
alert(oneString);

Or you could use console.log(oneString). You don't even need the intermediate variable - you could do

var alpha = ['a', 'b', 'c', 'd'];
console.log(alpha.join('\n'));

Nice and compact. The join() function will concatenate the elements of the array; it will normally use the comma as separator, but you can override this with your own separator (the argument to the function). That's how this works - very compact, no iterating.

see http://jsfiddle.net/znAPK/

Upvotes: 6

Todd Jefferson
Todd Jefferson

Reputation: 184

The JavaScript Array global object is a constructor for arrays, which are high-level, list-like objects.

Syntax

[element0, element1, ..., elementN]
new Array(element0, element1, ..., elementN)
new Array(arrayLength)

var arr = ["this is the first element", "this is the second element"];
console.log(arr[0]);              // prints "this is the first element"
console.log(arr[1]);              // prints "this is the second element"
console.log(arr[arr.length - 1]); // prints "this is the second element"

Try this syntax according to your code

Upvotes: 0

hexacyanide
hexacyanide

Reputation: 91619

Just use the length of the array to iterate it with a for loop:

var alpha = ['a', 'b', 'c'];
for (var i = 0; i < alpha.length; i++) {
  console.log(alpha[i]);
}

Upvotes: 9

Related Questions