vue加减法

<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title>Title</title><script src="https://cdn.staticfile.org/vue/2.2.2/vue.min.js"></script>&l

海涛高软

4081人浏览 · 2020-09-14 10:26:28

海涛高软 · 2020-09-14 10:26:28 发布

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="https://cdn.staticfile.org/vue/2.2.2/vue.min.js"></script>

    <style>
    </style>
</head>
<body>
<div id="app">
    您点击了 {{count}} 次 ,奇偶判断: {{qiOu}}<br/>
    <button @click="tianjia">+</button>
    <button @click="jianshao">-</button>
</div>

<script>
    var vue = new Vue({
        el: "#app",
        data() {
            return {
                count: 0
            }
        },
        computed: {
            qiOu() {
                return this.count % 2 == 0 ? "偶数" : "奇数";
            }
        },
        methods: {
            tianjia() {
                this.count = ++this.count;
            },
            jianshao() {
                var zhi = this.count - 1;
                if (zhi <= 0) {
                    zhi = 0;
                }
                this.count = zhi;
            }
        }
    });

</script>
</body>
</html>

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vue 表单验证

1、6位小写字母和数字必须包含两个字母rules: [{ required: true, message: "XXX不能为空", trigger: "blur" },{ max: 6, message: "最大长度为6位字符", trigger: "blur" },{pattern: /^(?=(?:[^a-z]*[a-z]){2})[a-z0-9]{6,6}$/, //不连续的两位字母// /^