Vue shopping cart instance

This is the rendering. It seems very simple. Have you been writing Jquery code for a long time, always thinking about DOM operation? I haven't switched over for a long time. Finally, Vue's attributes are used for control, and the function of multiple attribute selection is realized

Directly on the source code!

  • index.html
<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <title>Shopping cart example</title>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" type="text/css" media="screen" href="style.css" />
</head>

<body>
    <div id="app" v-cloak>
        <template v-if="list.length">
            <table>
                <thead>
                    <tr>
                        <th>
                            <input type="checkbox" @click="allCheck()">
                        </th>
                        <th>number</th>
                        <th>Trade name</th>
                        <th>item pricing</th>
                        <th>Purchase quantity</th>
                        <th>operation</th>
                    </tr>
                </thead>
                <tbody>
                    <tr v-for="(item,index) in list">
                        <td>
                            <input type="checkbox" :checked="isAllCheck" @click="tab(index)">
                        </td>
                        <td> {{ index+1 }} </td>
                        <td> {{ item.name }} </td>
                        <td> {{ item.price }} </td>
                        <td>
                            <button @click="deleteto(index)">-</button>
                            {{ item.count }}
                            <button @click="add(index)"> +</button>
                        </td>
                        <td>
                            <button @click="remove(index)">remove</button>
                        </td>
                    </tr>
                </tbody>
            </table>
            <div> Total price:$ {{ totalPrice }} </div>
        </template>
        <div v-else>
            Shopping cart is empty
        </div>
    </div>
    <script src="../vue.js"></script>  //If this path needs to be modified, we won't talk about it
    <script src="index.js"></script>
</body>
</html>
  • index.js
var app = new Vue({
    el: "#app",
    data: {
        list: [{ //Simulate the data obtained by ajax
                id: 1,
                name: "iphone7",
                price: 6188,
                count: 1,
                isCheck: false
            },
            {
                id: 2,
                name: "ipad pro",
                price: 5888,
                count: 1,
                isCheck: false
            },
            {
                id: 1,
                name: "Mac",
                price: 21488,
                count: 1,
                isCheck: false
            }
        ],
        isAllCheck: false
    },
    computed: {
        totalPrice() {
            if (!this.isAllCheck) return 0  //Select all cancel return to 0
            //Filter is used to filter out some elements of Array and return the remaining elements
            let check = this.list.filter(item => item.isCheck) //Pass in list to judge list.isCheck true/false  
            if (check.length == 0) return 0 //All unchecked return to 0
            let total = 0;
            for (var i = 0; i < check.length; i++) {
                var item = check[i];
                total += item.price * item.count; //Price * quantity
            }
            return total;
        }
    },
    methods: {
        deleteto(index) {
            if (this.list[index].count == 1) {} else {
                this.list[index].count--;
            }
        },
        add(index) {
            this.list[index].count++;
        },
        remove(index) {
            this.list[index].count = 0
        },
        tab(index) {
            this.list[index].isCheck = this.list[index].isCheck ? false : true //Toggle whether or not selected
        },
        allCheck() {
            this.isAllCheck = !this.isAllCheck
            if (this.isAllCheck) {
                this.list.map(item => {
                    item.isCheck = true
                })
            }
        }
    }
})
  • style.css
[v-cloak]{
    display: none;
}
table{
    border: 1px solid #e9e9e9;
    border-collapse: collapse;
    border-spacing: 0;
    empty-cells: show;
}

th,td{
    padding: 8px 16px;
    border: 1px solid #e9e9e9;
    text-align: left;
}
th{
    background: #f7f7f7;
    color: #5c6b77;
    font-weight: 600;
    white-space: nowrap;
}

This function uses Vue, and the code is easy to understand. Compared with the native code, it is easy to read or code. I hope you can see this case, study hard, and don't waste time, especially for college students

It's too late tonight. It's over

Keywords: Javascript Vue JQuery Attribute IE

Added by safetguy on Thu, 02 Apr 2020 14:18:20 +0300