老师检查作业
来源:2-25 项目作业
听的说
2021-12-30 19:32:12
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> </head> <body> <style> span { display: inline-block; width: 100px; height: 15px; background-color: #eee; } </style> <form action=""> <div> <label for="name">用户名</label> <input type="text" id="name" placeholder="6-30字母数字,下划线,字母开头"> </div> <div> <label for="password">密码</label> <input type="text" id="password"> <span></span> <span></span> <span></span> </div> <div> <label for="agen">再一次输入</label> <input type="text" id="agen"> </div> <button type="button" id="btn">注册</button> </form> <script> var btn = document.getElementById("btn"); var username = document.getElementById("name"); var password = document.getElementById("password"); var agen = document.getElementById("agen"); var span = document.getElementsByTagName("span"); username.onblur = function() { if (/^[a-zA-Z](\w{5,29})$/.test(username.value)) { alert("用户名输入正确"); } else { alert("输入有误") username.value = ""; } }; password.onblur = function() { if (/^[a-zA-Z0-9]{6,20}$/.test(password.value)) { if (/^[A-Z]+$/g.test(password.value) || /^[a-z]+$/g.test(password.value) || /^\d+$/g.test(password.value)) { span[0].style.backgroundColor = "red"; span[1].style.backgroundColor = "#eee"; span[2].style.backgroundColor = "#eee"; } else if (/^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)/.test(password.value)) { span[0].style.backgroundColor = "red"; span[1].style.backgroundColor = "yellow"; span[2].style.backgroundColor = "green"; } else if (/[\dA-Z]$/g.test(password.value) || /[\da-z]$/g.test(password.value) || /[a-zA-Z]$/g.test(password.value)) { span[0].style.backgroundColor = "red"; span[1].style.backgroundColor = "yellow"; span[2].style.backgroundColor = "#eee"; } alert("用户名输入正确"); } else { alert("输入有误"); span[0].style.backgroundColor = "#eee"; span[1].style.backgroundColor = "#eee"; span[2].style.backgroundColor = "#eee"; password.value = ""; } }; agen.onblur = function() { if (password.value == agen.value) { alert("密码正确"); } else { alert("密码错误"); agen.value = ""; } } btn.onclick = function() { if (username.value.length == 0 || password.value.length == 0 || agen.value.length == 0) { alert("请检查输入的内容"); } else { console.log("ok"); } }; </script> </body> </html>
2回答
好帮手慕久久
2021-12-31
同学你好,代码正确,写成这样就可以,不需要优化了。
建议把样式调整一下,巩固一下布局的能力。
祝学习愉快!
听的说
提问者
2021-12-30
代码样式是测试阶段。没有按照上面样子做,请老师帮我找代码bug,以及优化地方。