Use forEach for this like below

var a = ["a", "b", "c"];
a.forEach(function(entry) {
  console.log(entry);
});

You can use a simple for loop:

for (i = 0; i < array.length; i++)
  document.writeln((i+1) + ": " + array[i]);

And use the document.writeln to print it out. See the below working snippet.

Snippet

array = ["example1", "example2", "example3"];
for (i = 0; i < array.length; i++)
  document.writeln((i+1) + ": " + array[i]);

Note: The document.writeln() is implemented differently many times. So you should use:

document.getElementById("id_of_div").innerHTML += (i+1) + ": " + array[i];

Try to use for loop :

for (var i=0; i<array.length; i++)
    console.log(i + ". " + array[i]);

You can use standard array methods to get the result you're after. MDN has some great documentation on array iteration methods.

var examples = ["example1", "example2", "example3"];

// You can use reduce to transform the array into result,
// appending the result of each element to the accumulated result.
var text = examples.reduce(function (result, item, index) {
    var item_number = index + 1;

    return result + " " + item_number + ". " + item;
}, "");

// You can use a variable with forEach to build up the
// result - similar to a for loop
var text = "";

examples.forEach(function (item, index) {
    var item_number = index + 1;

    text = text + " " + item_number + ". " + item;
});

// You can map each element to a new element which 
// contains the text you'd like, then join them
var text = examples.map(function (item, index) {
    var item_number = index + 1;
    return item_number + ". " + item;
}).join(" ");

// You can put them into an HTML element using document.getElementById
document.getElementById("example-text-result").innerHTML = text;

// or print them to the console (for node, or in your browser) 
// with console.log
console.log(text);

You can try this:-

var arr = ['example1', 'example2', 'example3']
for (var i = 0; i < arr.length; i++){
    console.log((i + 1) + '. ' + arr[i])
}

Use forEach for this like below(ES6)

var a = ["a", "b", "c"];
a.forEach((element) => {
        console.log(element)
    }
);

There are already plenty of good answers here. But instead of printing in a loop, I'd propose a simple functional transformation to generate a string that you can print (or use in another way):

var exemple = ["example1", "example2", "example3"]
var O = exemple.map( (e,i) => (i+1+"."+e) ).join(' ');
console.log(O);

It works by applying a .map() on your array, with an arrow function to combine each array element e and its index i into a string. You then just need to .join() the elements of the resulting array, using any separator you want (e.g. ' ').