Derek Zhu
Responsive Layout One page corresponds to multiple devices. When the device screen/pc webpage size changes, the page layout (not the element/text size) will be changed automatically. There
Variable Variables are defined with --, referenced with var(--varName), and can be accessed by JS. 123:root { //declare in the top root of css--variables and assign values --logo-size:60px;
Web site folder directory design index.html src > style.css src > script.js src > assets > video >videos && src > assets > images > svgs Resource Site Videos a
Traverse the object: for…in loops through the object’s own and inherited enumerable properties Loops through the object’s own and inherited enumerable
Promise.all() and Promise.allSettled() Promise.all and Promise.allSettled are both methods for handling multiple concurrent Promises, but they differ
Promise: A new solution for asynchronous programming introduced in ES6. Promises are mainly to solve the previous problem of callback hell. Promise is
render() rerender is used to simulate props changing. How to get rerender(): 1const {rerender} = render(<FavoriteNumber />); rerender(
Format expect(A).ValidateItem() is used in React testing library and Jest to verify functionality. Expect() Assertion Summary 1 [Expect() Assertion Su