javascript class inheritance constructor

So a function with one or more parameters can be used like a constructor where you can pass parameter values at the time or creating an object with new keyword. In JavaScript a function can have one or more parameters.


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Use the constructor function when you know the regular expression pattern will be changing or you dont know the pattern and obtain it from another source such as user input.

. Example - Adding the class name. In this example we are using the className property for adding the para class to the paragraph element having id p1We are applying the CSS to the corresponding paragraph using the class name para. The constructor of the regular expression objectfor example new RegExpabcresults in runtime compilation of the regular expression.

Class Intro Class Inheritance Class Static JS Async JS Callbacks JS Asynchronous JS Promises JS AsyncAwait JS HTML DOM DOM Intro DOM Methods DOM Document DOM Elements DOM HTML DOM Forms DOM CSS DOM Animations DOM Events DOM Event Listener DOM Navigation DOM Nodes DOM Collections DOM Node Lists JS Browser BOM JS Window JS Screen JS. We have to click the given HTML button Add Class to see the effect. The example of using the className property is given as follows.

In the other programming languages like Java or C a class can have one or more constructors.


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