JavaScript Array every method 

The function, whether it is anonymous or declared will always be passed the three values in the same order. myArray.every( function(item, index, arr){ }); //or function f(item, index, arr){ } myArray.every( f );

@@SteveGriffith-Prof3ssorSt3v3 ooh, i see, thanks so much your explanation, thanks

:P

i have a question so i tried using your explanation but when i try printing every single item i get only the first value like this ------------------------------------------ function palindrome(str) { let result = str.split('') result.every((val) =>{ console.log(val) }) } palindrome('abba')

The every method looks for a truthy or falsey value to come back from the function. As soon as it gets a falsey value it stops. Your function has no explicit return value, so it returns undefined which is falsey. console.log( ) returns undefined which is falsey. So, even the arrow function without the curly braces would still stop on the first iteration if all you put there was the console.log. Here is a version that shows all the letters. function palindrome2(str) { let result = str.split(''); result.every((val) =>{ console.log(val); return true; }) } palindrome2('abba');

You're welcome!

The videos that I made 3 years ago were with a cheap mic so the audio on some of them is quite low. However, headphones with noise cancelling type technology will also reduce the volume. I have two different sets of headphones and the audio level is very different on both.

The videos that I made 3 years ago were just with the built-in mic. Some of them have lower audio quality. Everything in the last 2.5 years has much better audio quality.