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JS 参考手册
JavaScript Object constructor 属性
tryjsref_object_constructor
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<!DOCTYPE html> <html> <body> <h1>JavaScript Objects</h1> <h2>The constructor Property</h2> <p id="demo"></p> <script> const person = { firstName: "John", lastName: "Doe", age: 50, eyeColor: "blue" }; let text = person.constructor; document.getElementById("demo").innerHTML = text; </script> </body> </html>