Comma-separated letters

Question

https://code.sololearn.com/WmQIGvqjntDv/?ref=app

This code above surpose to print all the letters contained in an array, but it prints each letter separed by a comma. Please, what was my mistake?

Answer 1

you can use a string instead the array (with the corrections that MR Programmer suggested to avoid going above the string length)

var name = "JAVA";

Answer 2

You have comma between each letter, because you use a special variable name ^^

As you must know, the global scope in JS is strored as properties of 'window' object...
That's why you can use window.setInterval() without the 'window' reference.
So a variable declared in the global scope ( as function declaration ), are properties of 'window' object:

var v = 42; // is equivalent to: window.v = 42

Unfortunaly, your 'name' variable is in conflict with the window.name built-in property:
https://developer.mozilla.org/fr/docs/Web/API/Window/name

Such property store string, and expect string at assignation, so your array is implicitly turned to the default string representation of your array ( from the Array.toString() method, as if you document.write(name) ), so 'name' contain a 7 character long string: "J,A,V,A"

You can fix it just by renaming your array ( and including the changes suggested by @MR Programmer ):

var myname = new Array("J", "A", "V", "A");

var i = 0;

var clk;
function print() {
if(myname.length < i-1) clearInterval(clk);
document.write(myname[i]);
i++;
}

clk = setInterval(print, 800);

Answer 3

after the i is equals to the text size clear the interval.

var clk;
function print() {
if(name.length < i-1)
clearInterval(clk);
document.write(name[i]);

i++;
}

clk = setInterval(print, 800);