text: window.onload=function(){
  	//获取显示隐藏按钮DOM对象
  	let showBtn = document.getElementById('showBtn');
  	//获取订单明细DOM对象
  	let detailetBox = document.getElementById('detailetBox');
  	//设置默认订单明细是隐藏的
  	detailetBox.style.display='none';
  	showBtn.onclick = function(){
  		//判断订单明细DOM对象是否隐藏，如果是就显示，否则就隐藏
  		
  		if(detailetBox.style.display=='none'){
  			detailetBox.style.display='block';
  		}else{
  			detailetBox.style.display='none';
  		}
  	}
  	
  	
  	}
  	