摘要:
This what it 'this' special variable that is created for every execution context. this是在每一个执行上下文中产生的变量的,每一个执行上下文都有自己的this值。this不是静态的,它取决于函数如何被调用,它的值会在 阅读全文
摘要:
JavaScript works behind the scenes —— hoisting and TDZ(变量提升和暂时性死区) concept Makes some types of variables accessible/usable in the code before they are 阅读全文
摘要:
JavaScript works behind the scenes —— scope and scope chain(作用域和作用域链) what is scope? (作用域的概念) Scope: Space and environment in which a certain variable 阅读全文
摘要:
JavaScript works behind the scenes —— execution context(执行上下文) What is execution context? 什么是执行上下文 Environment in which a piece of JavaScript is execu 阅读全文
摘要:
what is a JavaScript engine? program that executes JavaScript code. JavaScript引擎是运行JavaScript代码的程序。 how engine works? JavaScript contains a call stack 阅读全文
摘要:
API Application Programming Interface: a piece of software that can be used by another piece of software, in order to allow application to talk to eac 阅读全文