本文實例為大家分享了JavaScript實現點擊切換驗證碼及校驗的具體代碼，供大家參考，具體內容如下
效果：
代碼：
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<!DOCTYPE html><html><head> <meta charset="UTF-8"> <title></title> <style> div { width: 100px; height: 40px; background-color: red; color: #fff; text-align: center; line-height: 40px; font-size: 30px; font-weight: 900; user-select: none; } .show { position: absolute; left: 0; top: 0; right: 0; bottom: 0; margin: auto; width: 200px; height: 100px; background-color: pink; text-align: center; line-height: 100px; font-size: 40px; font-weight: 900; display: none; } </style></head><body> <div></div> <input type="text" value="請輸入上圖的驗證碼" /> <button>注冊</button> <div class="show">等待中。。。。</div> <script type="text/javascript"> //1000-9999 var div = document.getElementsByTagName("div"); var inp = document.getElementsByTagName("input")[0]; var btn = document.getElementsByTagName("button")[0]; div[0].innerHTML = ranFun(1000, 9999); inp.onclick = function () { this.value = "" } div[0].onclick = function () { this.innerHTML = ranFun(1000, 9999) } btn.onclick = function () { if (inp.value == div[0].innerHTML) { div[1].style.display = "block"; setTimeout(function () { location.href = "register.html" }, 3000) } else { alert('驗證碼錯誤') div[0].innerHTML = ranFun(1000, 9999); inp.value = "" } } function ranFun(a, b) { return Math.floor(Math.random() * (b - a + 1) + a) } </script></body></html> |
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持服務器之家。
原文鏈接：https://blog.csdn.net/dongdongaa0/article/details/112258382
