网站一键灰色代码

var date = new Date();
                    var seperator1 = "-";
                    var year = date.getFullYear();
                    var month = date.getMonth() + 1;
                    var strDate = date.getDate();
                    if (month >= 1 && month <= 9) {
                        month = "0" + month;
                    }
                    if (strDate >= 0 && strDate <= 9) {
                        strDate = "0" + strDate;
                    }
                    var currentdate = year + seperator1 + month + seperator1 + strDate;
  
  if(currentdate=='2020-04-04'){
  console.log('color')
   document.querySelector('html').style.webkitFilter='grayscale(1)'
  }
    else{
    document.querySelector('html').style.webkitFilter='grayscale(0)'
      console.log('gray')
    }