var patternClass = (function () { var instance; function createInstance() { var object = new Object(“This is the instance”); return object; } return { getInstance: function () { If (!instance) { instance = createInstance(); } return instance; } }; })(); What is the design pattern used in this piece of code ?
主要考react, javascript, HTML, CSS 問題 像是 var patternClass = (function () { var instance; function createInstance() { var object = new Object(“This is the instance”); return object; } return { getInstance: function () { If (!instance) { instance = createInstance(); } return instance; } }; })(); What is the design pattern used in this piece of code ?
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