My opinion: It's nice to see because it makes devs declare variables (even guarding against redeclaration) instead of depending on JS auto-creating globals + hoisting. Related functionality: It enables 'let', '
What does back burner mean? What is a “pissing contest”? What does “let’s play it by ear” mean? Earns The Big Bucks? What does shady mean? It all boils down to? What is crunch time? Game Time Decision? Catch Off Guard? What is an alpha male? What is a hard stop? Take ...
What does "object destructuring" mean and what is the result of a destructuring operation?THE SOLOPRENEUR MASTERCLASS Launching June 24th Say you have an object with some properties:const person = { firstName: 'Tom', lastName: 'Cruise', actor: true, age: 57 }...
for (const x of ['a', 'b']) { console.log(x); } // Output: // a // b 30.6.3 Ways of declaring variables The following table gives an overview of six ways in which variables can be declared in ES6 (inspired by a table by kangax):HoistingScopeCreates global properties var ...
What does back burner mean? What is a “pissing contest”? What does “let’s play it by ear” mean? Earns The Big Bucks? What does shady mean? It all boils down to? What is crunch time? Game Time Decision? Catch Off Guard? What is an alpha male? What is a hard stop? Take ...
Note: accessing a variable that’s not been declared will raise a ReferenceError: <variable> is not defined error, but this does not mean it’s undefined.How do you check if a variable is null? Use the comparison operator, for example age === nullSame for undefined: age === undefined...
What does back burner mean? What is a “pissing contest”? What does “let’s play it by ear” mean? Earns The Big Bucks? What does shady mean? It all boils down to? What is crunch time? Game Time Decision? Catch Off Guard? What is an alpha male? What is a hard stop? Take ...