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June 21, 2018 19:11
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vue-car-counter
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="UTF-8" /> | |
| <title>Vue</title> | |
| <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script> | |
| </head> | |
| <body> | |
| <div id="app"> | |
| <h1>Car Counter</h1> | |
| <input type="text" v-on:keydown.enter="addCar" /> | |
| <ul> | |
| <li v-for="car in cars">{{ car.color }} - ({{ car.count }}) <button v-on:click="increaseCount(car.id)">+</button><button v-on:click="decreaseCount(car.id)">-</button><button v-on:click="removeCar(car.id)">remove</button></li> | |
| </ul> | |
| {{ vueState() }} | |
| </div> | |
| <script> | |
| new Vue({ | |
| el: '#app', | |
| data: { | |
| value: '', | |
| cars : [ | |
| {id: 1, color: 'red', count: 0}, | |
| {id: 2, color: 'green', count: 0}, | |
| {id: 3, color: 'blue', count: 0} | |
| ] | |
| }, | |
| methods: { | |
| addCar : function(event) { | |
| this.value = event.target.value | |
| const newCar = {id: this.randID(), color: this.value, count: 0} | |
| this.cars = [...this.cars, newCar] | |
| event.target.value = '' | |
| }, | |
| removeCar : function(carID) { | |
| this.cars = this.cars.filter(function(car){ | |
| return car.id != carID | |
| }) | |
| }, | |
| increaseCount : function(carID) { | |
| this.cars = this.cars.map(function(car) { | |
| if(car.id == carID) { | |
| car.count == car.count ++ | |
| return car | |
| } else { | |
| return car | |
| } | |
| }) | |
| }, | |
| decreaseCount: function (carID) { | |
| this.cars = this.cars.map(function (car) { | |
| if (car.id == carID) { | |
| car.count == car.count-- | |
| return car | |
| } else { | |
| return car | |
| } | |
| }) | |
| }, | |
| vueState : function() { | |
| return JSON.stringify(this.cars) | |
| }, | |
| randID : function() { | |
| return Math.random().toString(36).replace(/[^a-z]+/g, '').substr(2, 10); | |
| } | |
| } | |
| }) | |
| </script> | |
| </body> | |
| </html> |
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