break是结束整个循环,continue是结束单次循环
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>break and continue</title> </head> <body> <p>点击按钮,测试带有 break 语句的循环。</p> <button onclick="myFunction1()">点击这里</button> <p id="demo"></p> <script> function myFunction1() { var x = "", i = 0; for(i = 0; i < 10; i++) { if(i == 3) { break; } x = x + "The number is " + i + "<br>"; } document.getElementById("demo").innerHTML = x; } </script> <p>点击下面的按钮来执行循环,该循环会跳过 i=3 的步进。</p> <button onclick="myFunction2()">点击这里</button> <p id="demo2"></p> <script> function myFunction2() { var x = "", i = 0; for(i = 0; i < 10; i++) { if(i == 3) { continue; } x = x + "The number is " + i + "<br>"; } document.getElementById("demo2").innerHTML = x; } </script> </body> </html>
操作结果如下