前端实现手机号，姓名加密展示

一丶手机号

（1）正则匹配

    var phone = "13807999985";
    var resultPhone = phone.replace(/^(\d{3})\d{4}(\d+)/, "$1****$2");
    console.log(resultPhone);//138****9985

（2）substr截取

    var phone = "17610603529";
    var mphone = phone.substr(0, 3) + "****" + phone.substr(7);
    // 如果用 Es6 模板字符串的话,可以不用+号做拼接
    var phone = "17610603529";
    var mphone = `${
      
      phone.substr(0, 3)}****${
      
      phone.substr(7)}`;
    console.log(mphone);

二丶姓名

（1）substr 截取

activated() {
    
    
    console.log(this.formatName("王八肚")); // 王**
  },
  methods: {
    
    
    formatName(name) {
    
    
      let newStr;
      if (name.length === 2) {
    
    
        newStr = name.substr(0, 1) + "*"; // 通过substr截取字符串从第0位开始截取,截取1个
      } else if (name.length > 2) {
    
    
        // 当名字大于2位时
        let char = "";
        for (let i = 0, len = name.length - 2; i < len; i++) {
    
    
          // 循环遍历字符串
          char += "*";
        }
        newStr = name.substr(0, 1) + char + name.substr(-1, 1);
      } else {
    
    
        newStr = name;
      }
      return newStr;
    },
  },