underscore.js:敲underscore.js源码 js源码

renowned_11920 21 0 ZIP 2021-04-22 20:04:46

underscore.js 敲underscore.js源码(function(){// BASELINE SETUP /*Establish the root object,window in the browser,or export on the server:创建一个全局对象,在浏览器中表示window对象,在Node.js中表示global对象:var root=this;*/ var root = this; /*Save the previous value of the _ variable,保存被"_"覆盖之前的值,保存原有的全局变量"_",防止与其他库对_的使用冲突*/ var previousUnderscore = root._; /*Save bytes in th minified(but not gzipped) version:将内置对象的原型链缓存在局部