A brief explanation to what hoisting means in the JavaScript programming languageJavaScript before executing your code parses it, and adds to its own memory every function and variable declarations it finds, and holds them in memory. This is called hoisting....
NaN===NaN;// false Therefore, to check if a number isNaNor not, you woulduse theNumber.isNaN()method (or the slightly differentisNaN()global function). However, do not confuse these as a means to check whether a non-numeric value is a number or not. For that, you should instead ...
It feels like in the last couple of years, we finally managed to settle on what we had been looking for from the beginning: Clean Code. But what is Clean Code, and what does it encompass? This is about causes and (clean) code The problem that we solve at Sonar is a big problem,...
The continue keyword lets us skip one iteration, in the for and for..of and while loops. The loop does end that iteration, and will continue from the next one.A for..in loop can’t use break. It’s not possible to end it in this way....
Agreed on the $return value. It is bit confusing in the docs: https://docs.microsoft.com/en-us/azure/azure-functions/functions-triggers-bindings#using-the-function-return-type-to-return-a-single-output It talks about the value but then there is no return called.Contributor...
1. Any positive value, including POSITIVE_INFINITY, multiplied by NEGATIVE_INFINITY is NEGATIVE_INFINITY. 2. Any negative value, including NEGATIVE_INFINITY, multiplied by NEGATIVE_INFINITY is POSITIVE_INFINITY. 3. Zero multiplied by NEGATIVE_INFINITY is NaN. ...
Number.isNaN(num) checks whether num is the value NaN. In contrast to the global function isNaN(), it doesn’t coerce its argument to a number and is therefore safer for non-numbers: > isNaN('???') true > Number.isNaN('???') false Three additional methods of Number are mostl...
A method is a function assigned to an object property:const dog = { bark: () => { console.log('wof!') }, } dog.bark()The method can access the object properties, but only when it’s a regular function, not an arrow function:...