HTML CHEAT SHEET

Array Higher Order Functions

• .forEach()
• .map()
• .reduce()
• .filter()

.forEach()

.forEach() iterates through each element executing a provided function for each element.

const array = ["jack", "and", "jill", "went", "up", "the", "hill"];

function displayString(str){
    console.log(str);
}

array.forEach(displayString);

Output:

jack
and
jill
went
up
the
hill

You can use an anonymous function (most common) as well

const array = ["jack", "and", "jill", "went", "up", "the", "hill"];

array.forEach((element) => { console.log(element); });