The meaning of Var that=this in JavaScript

You may find that there is a sentence in the code written by someone else: var = this; What does that mean?

In JavaScript, this represents the current object.

var that=this is a copy of the current this object into that variable. What is the point of doing this?

$ (' #zhetenga '). Click (function () {

This is the #zhetenga that is clicked

var = this;

$ ('. Zhetenga '). each (function () {

This is the current object in the. Zhetenga loop

That's still the #zhetenga that was just clicked

});

});

As you can see, the This object changes at any time in the program, and after Var that=this, that does not change until it points to the then-current this, so there is no way to find the original object.

The meaning of Var that=this in JavaScript