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How to traverse json array using key value in JS

php中世界最好的语言Original: 2018-06-01 09:27:181414browse

This time I will show you how JS uses key values to traverse json arrays. What are the precautions for JS to use key values to traverse json arrays. Here is a practical case, let’s take a look.

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8" />
    <title>js键值对遍历json数组</title>
  </head>
  <body>
<script type="text/javascript">
var data = [];
var data = [];
data['上海'] = [{
  city:'闵行',
  value:'minhang'
},{
  city:'浦东',
  value:'pudong'
}];
data['四川'] = [{
  city:'温江',
  value:'wenjiang'
},{
  city:'成都',
  value:'chengdu'
}];
// 遍历数组
for(var province in data){
  for(var i=0;i<data[province].length;i++){
    console.log(province + &#39; - &#39; + data[province][i].city + &#39; - &#39; + data[province][i].value);
  }
}
</script>
</body>
</html>

The running results are as follows:

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the PHP Chinese website!

How to traverse json array using key value in JS

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