如何使用 JavaScript 从 JSON 数组读取数据?

javascriptweb developmentobject oriented programming更新于 2025/8/29 21:00:17

以下是使用 JavaScript 从 JSON 数组读取数据的代码 −

示例

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
<style>
   body {
      font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
   }
   .sample,.result {
      font-size: 18px;
      font-weight: 500;
      color: red;
   }
</style>
</head>
<body>
<h1>Read data from JSON array using JavaScript</h1>
<div class="sample">
[{"name":"Rohan","age":22}, {"name":"Shawn","age":12} ,{"name":"Michael","age":21}]
</div>
<div class="result" style="color: green;"></div>
<button class="btn">点击此处</button>
<h3>Click on the above button to read data from above JSON array</h3>
<script>
   let sampleEle = document.querySelector(".sample");
   let resultEle = document.querySelector(".result");
   let parsedJson = JSON.parse(sampleEle.innerHTML);
   document.querySelector(".Btn").addEventListener("click", () => {
      parsedJson.forEach((item) => {
         resultEle.innerHTML += "Name = " + item.name + "";
         resultEle.innerHTML += "Age = " + item.age + "";
      });
   });
</script>
</body>
</html>