按数字属性排序对象
按数字属性排序对象

<!DOCTYPE html>
<html>
<body>
 
<h1>JavaScript 数组排序</h1>
 
<p>点击按钮按年份对汽车进行排序：</p>
 
<button onclick="myFunction()">排序</button>
 
<p id="demo"></p>
 
<script>
var cars = [
  {type:"BMW", year:2017},
  {type:"Audi", year:2019},
  {type:"porsche", year:2018}
];
 
displayCars();
 
function myFunction() {
  cars.sort(function(a, b){return a.year - b.year});
  displayCars();
}
 
function displayCars() {
  document.getElementById("demo").innerHTML =
  cars[0].type + " " + cars[0].year + "<br>" +
  cars[1].type + " " + cars[1].year + "<br>" +
  cars[2].type + " " + cars[2].year;
}
</script>
 
</body>
</html>