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In ES5, we need to depend on logical OR operators to handle default values of function parameters. Whereas in ES6, Default function parameters feature allows parameters to be initialized with default values if no value or undefined is passed. Let's compare the behavior with an examples,
javascript
1//ES5
2
3var calculateArea = function (height, width) {
4 height = height || 50;
5 width = width || 60;
6
7 return width * height;
8};
9
10console.log(calculateArea()); //300The default parameters makes the initialization more simpler,
javascript
1//ES6
2
3var calculateArea = function (height = 50, width = 60) {
4 return width * height;
5};
6
7console.log(calculateArea()); //300Advertisement
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