提示：您可以先修改部分代碼再運行
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>輸入兩個數字，比較大小</title><style>body{font:12px/1.5 arial;text-align:center;}.f-text{width:50px;border:1px solid #ccc;background:#f0f0f0;font-family:inherit;padding:3px;}.f-btn{margin:0 10px;}strong{padding:0 10px;}span{font-weight:700;color:red;}</style><script type="text/javascript">window.onload = function (){var aInput = document.getElementsByTagName("input");var aSpan = document.getElementsByTagName("span")[0];var i = 0;for (i = 0; i < aInput.length - 1; i++){aInput[i].onkeyup = function (){this.value = this.value.replace(/[^d]/,"")}}aInput[2].onclick = function (){(aInput[0].value == "" || aInput[1].value == "") ?alert("請輸入數字！") :(aSpan.innerHTML = Math.max(aInput[0].value, aInput[1].value)) ;}};</script></head><body><input type="text" class="f-text" /><strong>vs</strong><input type="text" class="f-text" /><input type="button" value="最大的數是 »" class="f-btn" /><span>？</span></body></html></td> </tr></table>
提示：您可以先修改部分代碼再運行
