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Js Singleton Design Pattern
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var mySingleton = (function () { | |
var instance; | |
function init() { | |
// Private methods and variables | |
function privateMethod(){ | |
console.log( "I am private" ); | |
} | |
var privateVariable = "Im also private"; | |
var privateRandomNumber = Math.random(); | |
return { | |
// Public methods and variables | |
publicMethod: function () { | |
console.log( "The public can see me!" ); | |
}, | |
publicProperty: "I am also public", | |
getRandomNumber: function() { | |
return privateRandomNumber; | |
} | |
}; | |
}; | |
return { | |
// Get the Singleton instance if one exists | |
// or create one if it doesn't | |
getInstance: function () { | |
if ( !instance ) { | |
instance = init(); | |
} | |
return instance; | |
} | |
}; | |
})(); | |
let st = new mySingleton(); | |
st.getInstance(); |
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