课程: Level Up: JavaScript

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Dynamic colors

Dynamic colors - JavaScript教程

课程: Level Up: JavaScript

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Dynamic colors

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(video game music) - Closures are functions that close over their lexical environment or their scope. This allows us to access an outer function scope from an inner function. We use closures in many different places. For example, if we're filtering an array of items or if we're creating a new timeout. In this challenge we'll use closures to create three buttons. Each button will represent a different color and we'll change the background color of the document body to the color value. Using a closure, create a function called changeColor that accepts a color value. When the button is clicked, the closure should be invoked and the body background color should be updated. Pause the video here and develop your solution, and when you're ready, come back and I'll walk you through how I solve the challenge. (video game music) Here we have three buttons. Each button has an ID with the name of a color. Let's walk through the…

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