A constructor is a function that creates an instance of a class which is typically called an “object”. In JavaScript, a constructor gets called when you declare an object using the new keyword. The purpose of a constructor is to create an object and set values if there are any object properties present .
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Creating and using constructors A constructor is useful when you want to create multiple similar objects with the same properties and methods . It’s a convention to capitalize the name of constructors to distinguish them from regular functions.24 Eyl 2015
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The compiler automatically provides a public no-argument constructor for any class without constructors . This is called the default constructor. If we do explicitly declare a constructor of any form, then this automatic insertion by the compiler won’t occur.
Read moreIs constructor necessary in JavaScript?
Creating and using constructors A constructor is useful when you want to create multiple similar objects with the same properties and methods . It’s a convention to capitalize the name of constructors to distinguish them from regular functions.
Read moreCan a JavaScript class have no constructor?
If you don’t define a constructor for the class, a default one is created. The default constructor is an empty function, which doesn’t modify the instance. At the same time, a JavaScript class can have up to one constructor .11 Ara 2019
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