Roy Jeong geni429
geni429
/ sum.test.js
Created
January 24, 2019 08:44
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| // jest | |
| const sum = require('<module_path>/sum'); | |
| test('Add 1 and 2', () => { | |
| expect(sum(1, 2)).toBe(3); | |
| }); |
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| const sum = function sumInteger(num1, num2) { | |
| const sumIntegerResult = num1 + num2; | |
| return sumIntegerResult; | |
| } |
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| const arr = [1, 2, 3]; | |
| let foo; | |
| foo = arr.map(function(ele) { | |
| return ele + 1; | |
| }); | |
| foo = arr.map(ele => ele + 1); |
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| // function | |
| function sum_func(a, b) { | |
| return a + b; | |
| } | |
| // arrow function | |
| const sum_arrow = (a, b) => a + b; |
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| function foo() { | |
| this.x = 1; | |
| this.y = 2; | |
| } | |
| foo.prototype = { | |
| bar: function() { | |
| function add() { | |
| return this.x + this.y; | |
| } |
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| function foo() { | |
| this.x = 1; | |
| this.y = 2; | |
| } | |
| foo.prototype = { | |
| bar: function() { | |
| const add = () => this.x + this.y; | |
| return add(); |
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| function foo() { | |
| this.x = 1; | |
| this.y = 2; | |
| } | |
| foo.prototype = { | |
| bar: function() { | |
| function add() { | |
| return this.x + this.y; | |
| } |
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| import React, { Component, Fragment } from 'react'; | |
| class Foo extends Component { | |
| constructor() { | |
| super(); | |
| this.state = { | |
| num: 0 | |
| } | |
| this.add = this.add.bind(this); | |
| } |
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| function foo() { | |
| return 'Hello World!'; | |
| } |