1 (function( abc ) { 2 console.log(abc) // ==> 1231 3 })( 1231 ); 4 5 (function(window){ 6 console.log(window) // ==> Window {speechSynthesis: SpeechSynthesis, caches: CacheStorage, localStorage: Storage, sessionStorage: Storage, webkitStorageInfo: DeprecatedStorageInfo…} 7 })(window)
原文：https://www.cnblogs.com/ndh074512/p/14772890.html