JAVASCRIPT

javascript ES6 Default Parameter Values

function sum(x, y = 5) {

    // take sum
    // the value of y is 5 if not passed
    console.log(x + y);
}

sum(5); // 10
sum(5, 15); // 20

javascript default function parameter value

function multiply(a, b) {
  b = (typeof b !== 'undefined') ?  b : 1
  return a * b
} 

ES6: Set Default Parameters for Your Functions

const increment = (number, value = 1) => number + value;

Default function arguments in ES6

function sort(arr = [], direction = 'ascending') {
  console.log('I'm going to sort the array', arr, direction)
}

sort([1, 2, 3])
sort([1, 2, 3], 'descending')

Default parameters in ES6

let func = (a, b = 2) => {
  return a + b
}

ES6: Set Default Parameters for Your Functions

const resultDisplayArray = []; 
for(let i = 0; i < result.failure.length; i++) {
resultDisplayArray.push(`<li class="text-warning">${result.failure[i]}</li>`); 
}