URL details: moshanghua.net/details/2321

URL title: JS 预解析机制与作用域 | 花开陌上
URL description: JS 预解析机制 (变量提升 Hoisting) 预解析:在当前作用域下,js运行之前,会把带有var和function关键字声明的变量先声明,然后从上至下解析js语句 console.log(a); //undefined let a = 0; console.log(a); //0 // 预解析 // 会将页面中的
URL keywords: JavaScript, 作用域, 全局作用域, 预解析
URL last crawled: 2022-06-14
URL speed: 0.286 MB/s, downloaded in 0.400 seconds

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