把以下代码改写为jqueryscript let btnColorRed = documentquerySelectorred; let btnColorBlue = documentquerySelectorblue; let root = documentquerySelectorroot; btnColorRedaddEventListenerclick function r

<script>
  $(document).ready(function(){
    let btnColorRed = $('.red');
    let btnColorBlue = $('.blue');
    let root = $(':root');
    btnColorRed.click(function() {
      root.attr('style', '--color: #e74c3c');
    });
    btnColorBlue.click(function() {
      root.attr('style', '--color: #7f8c8d');
    });
  });
</script>