how can you add a comment in a JavaScript code example

Example 1: comment in javascript

// single line comment 

/* multiline comemnt 
line 2
line 3
line 4 */

Example 2: js comment

//This does not effect the code.
var something = "But this does effect the code!";

Example 3: javascript comment

//This is a javascript single line comment

/*
And here is a
multiline comment
*/