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正确
<body>
<img id="demo" src="scream.png"> <script> @(8).getElementById("demo").@(3) = "smiley.gif"; </script> </body>
<body>
<img id="demo" src="scream.png"> <script> document.getElementById("demo").src = "smiley.gif"; </script> </body> 不正确
点击 此处 重试 正确
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