884054fb
 “wangming”
项目初始化
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
|
import * as React from "react";
const MOBILE_BREAKPOINT = 768;
export function useIsMobile() {
const [isMobile, setIsMobile] = React.useState<boolean | undefined>(
undefined,
);
React.useEffect(() => {
const mql = window.matchMedia(`(max-width: ${MOBILE_BREAKPOINT - 1}px)`);
const onChange = () => {
setIsMobile(window.innerWidth < MOBILE_BREAKPOINT);
};
mql.addEventListener("change", onChange);
setIsMobile(window.innerWidth < MOBILE_BREAKPOINT);
return () => mql.removeEventListener("change", onChange);
}, []);
return !!isMobile;
}
|
