編輯代碼:
查看結果 »
試一試 - ©
w3ii.com
<!DOCTYPE html> <html> <body> <p>In this example, we have omitted the last parameter, and incremented the counter variable inside the loop.</p> <p>Click the button to loop through the indices of an array, in ascending order.</p> <button onclick="myFunction()">Try it</button> <p id="demo"></p> <script> function myFunction() { var cars = ["BMW", "Volvo", "Saab", "Ford"]; var i = 0; var len = cars.length; var text = ""; for (; i < len;) { text += cars[i] + "<br>"; i++; } document.getElementById("demo").innerHTML = text; } </script> </body> </html>