How to read json file in html

To use HTML to read JSON files, you need to: create JavaScript objects to parse JSON strings; use JavaScript to access JSON data, including properties, array elements, and nested objects.

How to read a JSON file using HTML

To read a JSON file using HTML, you can use the following steps:

1. Create a JavaScript object to parse JSON

<code class="javascript">const obj = JSON.parse(jsonString);</code>

where jsonString is a string containing JSON data.

2. Use JavaScript to access JSON data

After parsing the JSON string, you can use JavaScript to access the data in it. Here are some examples:

<code class="javascript">// 访问 JSON 对象的属性
console.log(obj.name);

// 访问 JSON 数组的元素
console.log(obj[0]);

// 访问 JSON 嵌套对象
console.log(obj.nested.value);</code>

Sample code:

<code class="html"><script>
  // 假设 JSON 数据已存储在 JSONString 变量中

  // 解析 JSON 字符串
  const obj = JSON.parse(jsonString);

  // 访问 JSON 数据
  console.log(obj.name); // 输出：John
  console.log(obj[0]); // 输出：{name: "Alice", age: 25}
  console.log(obj.nested.value); // 输出：100
</script></code>

Other notes:

• JSON data is required is a valid JSON format.
• If the JSON data contains special characters, the string may need to be escaped.
• You can use the XMLHttpRequest or fetch API to get JSON data from the server side.

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