操作数组，将重复的值进行累加
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>操作数组，将重复的值进行累加</title>
</head>
<body>
</body>
<script>
var arr = ['aa', 'bb', 'cc', 'dd', 'ee', 'ff']
var arr1 = [{
'key': "aa", 'doc_count': 1 }, {
'key': "cc", 'doc_count': 2 }]
for(var s = 0; s < arr1.length; s++) {
console.log(arr.indexOf(arr1[s]['key']))
if(arr.indexOf(arr1[s]['key']) != -1) {
var index = arr.indexOf(arr1[s]['key'])
arr[index] = `${
arr[index]}(${
arr1[s]['doc_count']})`
}
}
console.log(arr)
</script>
</html>