立即执行函数,传参方法

(function( abc ) {
console.log(abc) // ==> 1231
})( 1231 );
 
(function(window){
console.log(window) // ==> Window {speechSynthesis: SpeechSynthesis, caches: CacheStorage, localStorage: Storage, sessionStorage: Storage, webkitStorageInfo: DeprecatedStorageInfo…}
})(window)

 

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