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Recursive Functions in Javascript A function which can call itself function factorial(n) { if ((n === 0) || (n === 1)) return 1; else return (n * factorial(n - 1)); } console.log(factorial(4)); //24 Best practices Identify the base case Identify the recursive case Get closer and return the calculated value…
Pure Functions in Javascript Always returns the same output when given the same input, No side effect function square(number) { return number * number; } console.log(square(2)); // 4
High Order Functions in Javascript A function that returns a function or receives a function is called a Higher-Order Function const sayHello = function() { return function() { console.log("Hello!"); } } const myFunc = sayHello(); myFunc();
Javascript string methods with examples In the chapter, we will learn javascript string methods with examples. The javascript has inbuilt methods for string manipulation with almost cases. Let's write examples and list the same. Javascript string methods: let string = 'Learn Javascript'; let stringObj = new String('Learn Javascript'); let nfcString…
Check if a value exists in array in Javascript [caption id="attachment_8115" align="aligncenter" width="706"] Check if a value exists in array in Javascript with code snippet[/caption] In this chapter, you will learn about how to check if a value exists in an array in Javascript. When you have an array of…
Find an object in an array of objects by property value in Javascript In this chapter, you will learn about how to find an object in an array of objects by property value in Javascript. When you have an array of object and you just wanted to return an object…
Check if a key exists in an object in Javascript In this chapter, you will learn about how to check if a exists in an object in Javascript. The Javascript provides some inbuilt methods to check whether key or property exists in the object. The key of an object can…
Check variable is an integer or not in Javascript In this chapter, you will learn about how to check variable is an integer or not in Javascript., here I am listing the possible ways to check if the value is an integer or not. Solution 1: Number.isInteger(): To check if…
Check variable is number or not in Javascript In this chapter, you will learn about how to check variable is number or not in Javascript, here I am listing the possible ways to check if the variable is number or not. Solution 1: isNaN(): We can use the method isNaN()…
What is instanceof in Javascript In this chapter, you will learn about what is instanceof in Javascript. In simple words, The instanceof operator helps to check whether the LHS object name is belongs to the specific data type or class. Technically, the instanceof operator checks whether the prototype of a…