what is execution context? execution context is the environment in which javascript code runs. it contains information about variables, functions, and the value of this. types of...
执行上下文是javascript代码运行的环境,包含变量、函数和this的值。主要有三种类型:全局执行上下文、函数执行上下文和eval执行上下文。javascript通过栈管理执行上下文,函数调用时入栈,完成后出栈。