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41 lines
755 B
Markdown
41 lines
755 B
Markdown
---
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date: 20201006
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id: 4851138e-ddbd-4801-8178-51d990e327e5
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title: JavaScript arrow functions
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---
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# Introduction
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``` javascript
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const power = (base, exponent) => {
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let result = 1;
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for (let count = 0; count < exponent; count++) {
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result *= base;
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}
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return result;
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};
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console.log(power(2, 3))
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```
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If there is only one parameter name, parentheses can be omitted around
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the parameter list. Same for the function body and brackets
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``` javascript
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const square1 = (x) => { return x * x; };
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const square2 = x => x * x;
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console.log(square1(5))
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console.log(square1(6))
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```
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When an arrow function has no parameters at all, its parameter is just
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an empty set of parentheses
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``` javascript
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const horn = () => {
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console.log("Toot");
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};
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horn()
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```
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