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<!DOCTYPE html> <html> <body> <h2>JavaScript 循环</h2> <p>带有 <b>break</b> 语句的循环。</p> <p id="demo"></p> <script> var text = ""; var i; for (i = 0; i < 10; i++) { if (i === 3) { break; } text += "数字是 " + i + "<br>"; } document.getElementById("demo").innerHTML = text; </script> </body> </html>