示例：

// 必须包含数字,大小写字母,特殊字符,至少6位
var reg =  /^(?![A-z0-9]+$)(?=.[^%&',;=?$\x22])(?=.*[a-z])(?=.*[A-Z])(?=.*[0-9]).{6,}$/

1-1.邮箱验证

 <!-- 邮箱验证 -->
    <input type="text" id="app">
    <script>
        var reg =/^\w+@[a-z]+\.com/;
        $("#app").keyup(function(event){
            if(event.keyCode==13){
                var value =$(this).val();
                console.log(reg.test(value))
            }
        })
    </script>

1-2. 截取数值转换形式

<script>
        var url ="https://movie.douban.com/subject/129205/";
        var reg =/[^\d]/g;
        // console.log(url.replace(reg,""));
        var arr =url.replace(reg,"");
        var sum=[];
        for(var i=0;i<arr.length;i+=2){
            var item =arr.substr(i,2).split("");
            console.log(item);
            sum.push(item);
        }
        console.log(sum)  ---[[1,2],[9,2],[0,5]]
    </script>

1-3. 验证电话号码

<!-- 验证电话号码 -->
    <input type="text" id="app">
    <script>
        var reg =/^(086)?1[3-9]\d{9}$/;
        $("#app").keyup(function(event){
            if(event.keyCode==13){
                var value =$(this).val();
                console.log(reg.test(value))
            }
        })
    </script>

1-4. 验证身份证号码

<!-- 验证身份证号码 -->
    <input type="text" id="app">
    <script>
        var str ="422823202110120022";
        var reg = /^42\d{15}[\dx]$/;
        console.log(reg.test(str));
    </script>

1-5. 密码规格要求

<input type="text" id="app">
    <script>
        // 密码包含大小写字母和数字且以大字字母开头
    var reg =/^[A-Z]+[a-z]+\d{6,}$/;
        $("#app").keyup(function(event){
            if(event.keyCode==13){
                var value =$(this).val();
                console.log(reg.test(value))
            }
        })
    </script>

1-6. 获取对象的值并整合

<script>
        var obj ={
            top250:["你好154","他的152"],
            comingSoon:["防抖456","节流121"],
            theaters:["放大镜222","防静电666"]
        }
        var arr =[];
        // 1.获取对象中属性的值
        for(var k in obj){
            // console.log(obj[k]);
            // 2.需要将属性的值整合到一个数组
            arr.push(obj[k][0])
        }
        // console.log(arr)
        var reg =/\d/g;
        var res =[];
        // 3.对数组中每一项值，过滤
        arr.forEach(name=>{
            var name = name.replace(reg,"");
            console.log(name)
            res.push({
                name
            })
        })
        console.log(res)
    </script>

1-7. 去除相同值，并整合

****
<script>
        var arr ={
            A:[{city:"武汉"},{city:"广州"}],
            B:[{city:"深圳"},{city:"广州"}],
            C:[{city:"上海"},{city:"广州"}],
        }
        var list =[];
        for(var k in arr){
            // console.log(arr[k]);
            list.push(...arr[k]);
        }
        //  console.log(list)
         var res = [];
         list.forEach(item=>{
             var {city}=item;
            //  console.log(item)
            if(!res.includes(city)){
                res.push(city)
            }
         })
         console.log(res)
    </script>
****
<script>
        var arr =[
            {name:"lisi"},
            {name:"tom"},
            {name:"html"},
            {name:"css"},
            {name:"css"},
            {name:"html"},
        ]
        var res =[];
        arr.forEach(item=>{
            // console.log(item);
            var {name} =item;
            if(!res.includes(name)){
             res.push(item.name);
            }
        })
        console.log(res)
    </script>