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HTML DOM Title 对象
tryjsref_title_get
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<!DOCTYPE html> <html> <head> <title>HTML DOM Objects</title> </head> <body> <h3>A demonstration of how to access a TITLE element</h3> <p>Click the button to get the text of the document's title.</p> <button onclick="myFunction()">Try it</button> <p id="demo"></p> <script> function myFunction() { var x = document.getElementsByTagName("TITLE")[0].text; document.getElementById("demo").innerHTML = x; } </script> </body> </html>