摘要：
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="wi 阅读全文
摘要：
核心代码 //全屏 function fullScreen() { // const rootElement = document.documentElement; //若要全屏页面div const element = document.querySelector(".fullScreen_pan 阅读全文