node, but if you define a local variable directly, how do you get it and where do you store it?
//
var name = 1
console.log(name)
console.log(this.name)
console.log(global.name)1undefinedundefined is the same as js in the browser, except that the top-level object in the browser window becomes the global top-level object in node .
in browser: console.log (this)-> window
node: console.log (this)-> global
in addition, there is no modularity in browsers, while there is modularity in node , which is slightly different in declaring variables.
node: var name = 'name' ;
browser: (function () {var name =' name'}) ();
js is window
node is global
is also divided into REPL environment and node file environment in Node.js, these two situations are different. The specific reason is that REPL actually uses a layer of vm package, and the var assignment of Node.js in vm is directly hung on global.
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