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<!DOCTYPE html> <html> <body> <h1>JSON parse()</h1> <p>JSON.parse() 解析以 JSON 格式编写的字符串，并返回一个 JavaScript 对象。</p> <p>“firstName”的值为：</p> <p id="demo"></p> <script> var obj = JSON.parse('{"firstName":"John", "lastName":"Doe"}'); document.getElementById("demo").innerHTML = obj.firstName; </script> </body> </html>