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Articles tagged with #javascript
Sometimes we need something to be executed only once in our code, in JavaScript we can create a one-time function to do something only once. Take a look at the code below 馃憞 const oneTimeFunction = function () { let executed = false return functi...
You have an array of numbers and you need to know the minimum and maximum values of the array without having to traverse the entire array, don't worry about it, you can get the minimum and maximum values very quickly using the following expression: l...
Suppose we have an array of numbers: let numbers = [20,10,52,25]. To get the sum we usually use a for loop and traverse through the list right. You can easily do that using the reduce array function. let numbers = [20, 10, 52, 25]; const sum = numbe...
Sometimes we need to work with random values, imagine that you have an array of items and you need to get a random value from the array. We can start creating a function that takes an array of items as a parameter and returns a random item from the a...
Sometimes we need to convert Strings to Numbers. The easiest and fastest way to convert strings to numbers would be using the + (plus) operator. Let's see. let fiveAsString = '5' let fiveAsNumber = +fiveAsString // Now the fiveAsNumber var contains 5...
The ternary operator is a simplified conditional operator like if / else. Syntax: condition ? <expression if true> : <expression if false> Here is an example using if / else: Before if (isAuthenticated) { renderApp(); } else { renderLogin(); } ...
