Vue

by flek

HTML

<div id="app">
  <input
    type="text"
    placeholder="what needs to be done?"
    v-on:keydown="keydownHandler"
  />
  <h2>Todos:</h2>
  <ol>
    <li v-for="todo in todos" :key="todo">
      <label>
        <input
          type="checkbox"
          v-on:change="check(todo)" />
        {{ todo }}
        <button v-on:click="remove(todo)">remove</button>
      </label>
    </li>
  </ol>
  <h2>Dones:</h2>
  <ol>
    <li v-for="done in dones">
      <del>{{ done }}</del>
    </li>
    <button v-if="dones.length" v-on:click="clear">clear</button>
  </ol>
</div>

CSS

body {
  background: #20262E;
  padding: 20px;
  font-family: Helvetica;
}

#app {
  background: #fff;
  border-radius: 4px;
  padding: 20px;
  transition: all 0.2s;
}

li {
  margin: 8px 0;
}

h2 {
  font-weight: bold;
  margin-bottom: 15px;
}

del {
  color: rgba(0, 0, 0, 0.3);
}

Vue

new Vue({
  el: "#app",
  data: {
    todos: [
      "Learn JavaScript",
      "Learn Vue",
      "Build something awesome"
    ],
    dones: []
  },
  methods: {
	  keydownHandler: function(event) {
    	if (event.which === 13) {
        this.enter(event.target);
      }
    },
    enter: function enter(input) {
      this.add(input.value);
      input.value = '';
    },
  	add: function(todo) {
    	this.todos.unshift(todo);
    },
  	remove: function(todo) {
      this.todos = this.todos.filter(t => t !== todo)
    },
  	check: function(todo) {
		  this.remove(todo);
		  this.dones.push(todo);
    },
    clear: function() {
      this.dones = [];
    }
  }
})