Date扩展 正则匹配

 

 

<script>

  Date.prototype.format=function(){
      var d=this;

      //严格匹配 yyyy-mm-dd hh-mm-ss
      var reg1=/yyyy-mm-dd hh-m-s/;

      //匹配 yyyy*mm*dd hh*mm*ss  *为任意一个除\r\n之外的字符 中间为任意多个空格
      var reg2=/y{4}.m{2}.dd\s+hh.mm.ss/;

      reg1.test(arguments[0]);
      reg2.test(arguments[0]);
      return d.getFullYear()+'-'
              + d.getMonth()+'-'
              + d.getDate()+' '
              + d.getHours()+'-'
              + d.getMinutes()+'-'
              + d.getSeconds();
  };
  var date=new Date();
  console.log(date.format('yyyy—mm-dd hh-mm-ss'));
  console.log(date);

  var str='oooo';
  var reg3=/o+/,reg4=/o+?/;
  console.log(reg3.exec(str));
  console.log(reg4.exec(str));
  console.log(str.match(reg4));
</script>