题解 | #列表动态渲染#

    <script>
        var people = [
            { name: '牛油1号', id: 1, age: 20 },
            { name: '牛油2号', id: 2, age: 21 },
            { name: '牛油3号', id: 3, age: 19 },
        ]
        var ul = document.querySelector('ul');
        // 补全代码
        var str=''
        for(var i=0;i<people.length;i++){
            str+='<li>'+people[i].name+' '+people[i].age+'岁'+'</li>'
		  // 也可以模板字符串
		  // str+=`<li>${people[i].name} ${people[i].age}岁</li>`
        }
        ul.innerHTML=str

    </script>