Chiều rộng kết quả:
px
×
<iframe src="https://viewcode.cunghocweb.com/trycode-full.php?id=72" style="width: 100%; height: 200px; border: 1px solid #ddd; border-radius: 10px; background: #fff"></iframe>
<html> <head> <script type="text/javascript"> function checkNumber() { number = document.getElementById("number").value; if (number > 0) { alert("Number la mot so duong"); if (number == 1) { alert("Number = 1"); } else if (number == 2) { alert("Number = 2"); } else if (number == 3) { alert("Number = 3"); } else { alert("Number khong phai la 0, 1, 2 hoac 3"); } } else if (number < 0) { alert("Number la mot so am"); } else if (number == 0) { alert("Number la so 0"); } else { alert("Number khong phai la mot so."); } } </script> </head> <body> Number: <input type="text" id="number" name="number" /> <input type="button" onclick="checkNumber()" value="Submit" /> </body> </html>