<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<script>
let a = [
{
label:'武漢',
index:5
},
{
label:'上海',
index:4
},
{
label:'成都',
index:1
},
{
label:'深圳',
index:9
}
]
function compare(arg) {
return function(a, b) {
return a[arg] - b[arg];
}
}
arr = a.sort(compare('index'));
console.log(arr)
</script>
</body>
</html>