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JavaScript Object.getOwnPropertyDescriptors() 方法
tryjsref_object_getownpropdescriptors
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<!DOCTYPE html> <html> <body> <h1>JavaScript Objects</h1> <h2>The getOwnPropertyDescriptors() Method</h2> <p>Object.getOwnPropertyDescriptors() returns the property descriptors of an object.</p> <p id="demo"></p> <script> // Create an object: const person = { firstName: "John", lastName: "Doe", age: 50, eyeColor: "blue" }; // Get Properties let descriptors = Object.getOwnPropertyDescriptors(person); document.getElementById("demo").innerHTML = descriptors.age.value; </script> </body> </html>