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JavaScript jQuery Basics (2014) Creating a Simple Drawing Application Perform: Part 1

Posted by Javid Abbasov
Javid Abbasov
9,243 Points

why????

Why we used this code? i didnt get. $color = $(this).css("background-color");

2 Answers

Jacob Mishkin
Jacob Mishkin
23,118 Points

the code is used to store or cache the color. So when you click on the button you can begin to set the CSS property of background-color to the canvas. the actual drawing is using on the mouse event. Remember the "this" is referring to the click event, so on click the variable color means CSS background-color.

I hope this helps.

jcorum
jcorum
71,830 Points
jcorum
jcorum
71,830 Points

As Andrew says at about 2:30, since he is selecting the current element he can use this to refer to it. Think of this as meaning my. Here he is caching the background color of the current element.