js获取数据：类似xpath

//获取节点，根据类名
var x=document.getElementsByClassName("toplist1-td opr-toplist1-link");

var sum="";
for(var i=0;i<x.length;i++){
	//console.log(i);
	//console.log(x[i]);
	
	var a=x[i].getElementsByTagName("a");
	for(var j=0;j<a.length;j++){
		console.log(i+1);
		var tmp=a[j].getAttribute("title");
		console.log(tmp);
		sum = sum + "【"+ tmp +"】" + " & ";
		//console.log(sum);
		
		
	
	}

}

console.log(sum);