Vue TodoList 入门 Demo

Posted 2020-12-29 phpcurd

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// TodoList 实例

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>This is todo List</title>
    <style type="text/css">
        .isFinshed{font-size: 20px; font-weight: 800; color: red;}
    </style>
</head>
<body>
<div id="app">
    <input type="text" v-model="message" @keyup.enter="itemsPush">
    <ol>
        <todo-item v-for="(item, index) in items" :key="index" :content="item.label" :index="index" @delete="todoListDelete" :class="{isFinshed: item.isFinshed}"></todo-item>
    </ol>
</div>
</body>
<script src="https://cdn.bootcss.com/vue/2.4.2/vue.min.js"></script>
<script type="text/javascript">

    Vue.component(‘todo-item‘, {
        props: [‘content‘, ‘index‘],
        template: ‘<li @click="handleClick">{{ content }}</li>‘,
        methods: {
            handleClick: function () {
                this.$emit(‘delete‘, this.index)
            }
        },
    })
// Vue Instance
    let app = new Vue({
        el: ‘#app‘,
        data: {
            message: ‘‘,
            items: [
                {
                    label: ‘makeing‘,
                    isFinshed: true,
                },
                {
                    label: ‘coding‘,
                    isFinshed: true,
                },
                {
                    label: ‘walking‘,
                    isFinshed: false,
                },
            ],
        },
        methods: {
// delete element or change element Sytle
            todoListDelete: function (index) {
                this.items.splice(index, 1);
                // this.items[index].isFinshed = ! this.items[index].isFinshed;
            },
// add new element
            itemsPush: function () {
                this.items.push({
                    label: this.message,
                    isFinshed: false,
                });
                this.message = ‘‘;
            },

        },
    })
</script>
</html>

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