实例代码“Ctrl+/”提示“F11/ESC”全屏 返回 格式化 恢复 运行
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<!DOCTYPE html>
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<html>
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<body>
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​
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<p>该实例中， myFunction 是函数构造函数:</p>
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​
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<p id="demo"></p>
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​
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<script>
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function myFunction(arg1, arg2) {
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    this.firstName = arg1;
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    this.lastName  = arg2;
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}
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​
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var x = new myFunction("John","Doe")
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document.getElementById("demo").innerHTML = x.firstName;
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</script>
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​
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</body>
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</html>
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