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JavaScript jQuery Basics (2014) Creating a Password Confirmation Form Perform: Part 1

Oğulcan Girginc
Oğulcan Girginc
24,848 Points

How does $(this) is linked to $("#password")?

How come this keyword knows that it is linked to #password, since the function that has this keyword was written before the #password?

$('form span').hide();

function passwordEvent(){
  if($(this).val().length > 8) {    
  } else {   


2 Answers

Jorge Septien
Jorge Septien
20,339 Points

You are binding the passwordEvent handler to the focus and keyup events on the #password element. The this keyword always refers to the owner of the method, in this case the selected #password element. The code in the handler will only run when the events are triggered.

I recommend reading up on JavaScript hoisting, scope, and context. This will explain what is happening above. A good set of videos i recommend can be found here: https://www.youtube.com/channel/UCVTlvUkGslCV_h-nSAId8Sw just check out the javascript section, he does a very good job explaining.