Question

I have the folowing code:

var transitionsSettingsClass = document.getElementsByClassName("transitionsSettings");   
var myLenght = transitionsSettingsClass.lenght;   
alert(myLenght);

and I am getting undefinded alert. However if I use:

alert(transitionsSettingsClass[0])

then I get a clear ressult. I am trying to use this script so it would setAttribute in every tag with classname transitionsSettings and I need a lenght of array for using loop (for).

Answer 1

document.getElementsByClassName return a NodeList , like an array but not an array.

And it also has a property which is length