js常有正则表达式

1. vue 限制只能输入名称32位中文，手机号11位数字，验证码6位数字

 watch: {
    'bindForm.name'(val) {
      let pattern = /[^\u4e00-\u9fa5]+/
      this.bindForm.name = val.replace(pattern, '')
      if (val.length > 32) {
        this.bindForm.name = val.substring(0, 32)
      }
      this.checkIsComplete()
    },
    'bindForm.phone'(val) {
      if (val.length > 11) {
        this.bindForm.phone = val.substring(0, 11)
      }
      this.checkIsComplete()
    },
    'bindForm.code'(val) {
      if (val.length > 6) {
        this.bindForm.code = val.substring(0, 6)
      }
      this.checkIsComplete()
    },
  }

2. 获取地址栏参数

function getQueryString(name) {
    var reg = new RegExp('(^|&)' + name + '=([^&]*)(&|$)', 'i')
    var reg_rewrite = new RegExp('(^|/)' + name + '/([^/]*)(/|$)', 'i')
    var r = window.location.search.substr(1).match(reg)
    var q = window.location.pathname.substr(1).match(reg_rewrite)
    if (r != null) {
       return unescape(r[2])
    } else if (q != null) {
       return unescape(q[2])
    } else {
       return null
    }
 }