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Tryit: JAVASCRIPT
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<!DOCTYPE html> <html> <body> <p>切勿将字符串创建为对象。</p> <p>JavaScript 无法比较对象。</p> <p id="demo"></p> <script> var x = new String("John"); var y = new String("John"); document.getElementById("demo").innerHTML = x==y; </script> </body> </html>