JS代码有一个特殊的规则，那就是hoisted提升规则，函数的调用可以放在函数实现的前面，但是仅限于函数是以非表达式的场合声明实现的，那么变量的提升又有什么不同呢，在开发过程中还会出现哪些经常犯的错误，本文对此进行了介绍。 One of the trickier aspects of JavaScript for new JavaScript developers is the fact that variables and functions are "hoisted." Rather than being available after their declaration, they might actually be available beforehand. How does that work? Let's take a look...       JavaScript阅读全文

本文详细解读了Javascript语言中的作用域Scope和上下文Context。JS是一种特殊的解释型语言，尤其是闭包的概念，使得JS更灵活，还有事件的绑定bind，this指针的用法等，相信本文有所帮助。 JavaScript’s implementation of scope and context is a unique feature of the language, in part because it is so flexible. Functions can be adopted for various contexts and scope can be encapsulated and preserved. These concepts are behind some of the most powerful design patterns JavaScript has to offe...       JavaScript阅读全文