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Default Parameters A JavaScript function can have default parameter values. Using default function parameters, you can initialize formal parameters with default values. If you do not initialize a parameter with some value, then the default value of the parameter is undefined. Example 1 Without passing argument value function Hello(name) { console.log('Value Of Name parameter = ' + name ) } Hello(); Output Value Of Name parameter = undefined Example 2 passing argument value function Hello(name) { console.log('Value Of Name parameter = ' + name ) } Hello("Hello"); Output Value Of Name parameter = Hello Example 1 With Set Parameters Default vlaue // Add Name parameter default value is 'Hello World' check below function Hello( name='Hello World' ) { console.log('Value Of Name parameter = ' + name ) } // Calling without passing arguments show the default value Hello(); Output Value Of Name ...

Es6 Topics Let, Const Arrow Function Default Parameter Values Rest Parameter Spread Operator Template Literals Classes Class Definition Class Inheritance Class Inheritance, From Expressions Base Class Access Static Members Getter/Setter

Javascript Codes Use this for Add Class on menu links using Javascript (function(){ var el = document.querySelectorAll('.custom-menu-primary a') el.forEach(function(e){ e.classList = e.textContent.toLowerCase().replace(/[^a-zA-Z0-9\.-]+/g,""); }) })(); Add Class on Scroll using Varible Height (function() { let _body = document.getElementsByTagName('body'); window.addEventListener('scroll', function() { _top = window.scrollY; if (_top > 100) { _body[0].classList.add("fadIn"); } else { _body[0].classList.remove("fadIn") } }); })(); Add Class on Scroll using Varible Height (function() { let _body = document.getElementsByTagName('body'); let herderHeight = document.querySelector('.header-container-wrapper...