1、过滤数字字母以…结尾

  1. <script>
  2.         var str = "https://www.baidu.com/12455";
  3.         var reg = /[0-9]/g;
  4.         console.log(str.replace(reg,""));
  5.         var arr = [
  6.             {id:1001,name:"你好3455ffd"},
  7.             {id:1001,name:"互戳撒网我3455ffd"},
  8.             {id:1001,name:"后台服务3455ffd"}
  9.         ]
  10.         var reg = /[0-9a-z]/g;
  11.         arr.forEach(item=>{
  12.             var name = item.name.replace(reg,"")+"...";
  13.             item.name = name;
  14.         })
  15.         console.log(arr);
  16.     </script>

2、输入手机号

  1. <body>
  2.     <input type="text" id="app">
  3.     <script>
  4.         //  ^(086)?1[356789]\d{9}$
  5.         var reg = /^(086)?1[3-9]\d{9}$/;
  6.         $("#app").keyup(function(event){
  7.             if(event.keyCode == 13){
  8.                 var value = $(this).val();
  9.                 console.log(reg.test(value));
  10.             }
  11.         })
  12.     </script>
  13. </body>

3、var reg = /(http|https):\/\/www.baidu.com/;

  1. <script>
  2.         var url = "http://www.baidu.com";
  3.         var https = "http://www.baidu.com";
  4.         var reg = /(http|https):\/\/www\.baidu\.com/;
  5.         console.log(reg.test(url))
  6.         console.log(reg.test(https))
  7.     </script>

4、身份证

  1. <script>
  2.         //42...x
  3.         //  42\d{15} (\d|x)
  4.         //  42\d{15}[\dx]
  5.         var str = "420528199108282529"
  6.         var reg = /^42\d{15}[\dx]$/;
  7.         console.log(reg.test(str));
  8.     </script>

5、密码

  1. <input type="text" id="app">
  2.     <script>
  3.         //密码  必须包含大写小写至少六位数字
  4.         var reg = /^[A-Z]+[a-z]\d{6,}$/     //开头必须是大写字母
  5.         $("#app").keyup(function (event) {
  6.                 if (event.keyCode == 13) {
  7.                     var value = $(this).val();
  8.                     console.log(value);
  9.                     console.log(reg.test(value));
  10.                 }
  11.             })
  12.     </script>

6、豆瓣 霸王别姬

  1. <p class="">
  2.         导演: 陈凯歌 Kaige Chen&nbsp;&nbsp;&nbsp;主演: 张国荣 Leslie Cheung / 张丰毅 Fengyi Zha...<br>
  3.         1993&nbsp;/&nbsp;中国大陆&nbsp;/&nbsp;剧情 爱情 同性
  4.     </p>
  5.     <script>
  6.         //[1993,中国大陆，剧情 爱情 同性]
  7.         var str = $("p").html().trim().split("<br>")[1].trim();
  8.         var reg = /&nbsp;/g
  9.         var res = str.replace(reg,"");
  10.         var arr = res.split("/");
  11.         var last = arr[arr.length-1].split(" ");
  12.         console.log(last);
  13.         // var sum = [];
  14.         // for(var i = 0; i<arr.length; i++){
  15.         //     if(i<arr.length-1){
  16.         //         sum.push(arr[i]);
  17.         //     }
  18.         // }
  19.         // sum.push(...last);
  20.         var sum = [arr[0],arr[1],...last];
  21.         console.log(sum);
  22.     </script>

7、邮箱验证

  1. <input type="text" placeholder="请输入你的邮箱">
  2.     <script>
  3.         // 邮箱验证  39775347@qq.com
  4.         // cheng_benchao@sina.com
  5.         var reg = /^\w+@[a-z]+\.com$/
  6.         $("input").keydown(function(event){
  7.             if(event.keyCode == 13){
  8.                 var value = $(this).val();
  9.                 console.log(value)
  10.                 console.log(reg.test(value));
  11.             }
  12.         })
  13.     </script>

8、”https://movie.douban.com/subject/129154/“

  1.  <script>
  2.         var url = "https://movie.douban.com/subject/129154/";
  3.         var reg = /[^\d]/g
  4.         var str = url.replace(reg,"");
  5.         var sum = [];
  6.         for(var i = 0; i<str.length; i+=2){
  7.             var item = str.substr(i,2).split("");
  8.             sum.push(item);
  9.         }
  10.         console.log(sum);
  11.     </script>