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WEB实验题目及代码

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JavaScript 基础训练一、实验目的:编写 JavaScript 代码,熟悉并掌握 JavaScript 的基本语法、控制结构及函数,掌握 JavaScript 预定义对象、浏览器对象的使用二、实验内容:在 MyEclipse 环境下编写 JavaScript 代码,调入或嵌入 HTML 页面中。三、实验要求:1。 熟悉并掌握 JavaScript 的基本语法、控制结构及函数;2。 掌握 JavaScript 预定义对象、浏览器对象的使用;3. 将 JavaScript 代码嵌入或调入 HTML 页面,并完成指定效果;4. 写出实验报告。四、实验学时:2 学时五、实验步骤:1.进入 MyEclipse 环境,新建一个 Web Project;2。 新建一个 HTML 网页,网页上有一个姓名输入框、密码输入框、性别单选按钮组和一个提交按钮,要求用户提交时检查姓名不能为空,密码长度在 6 到 10 位之间,性别项不能为空,假如不符合标准则不允许提交,并提示相应错误信息;3。在完成 P92 第 5 题的基础上实现计算功能【第 3 题注释:】parseFloat()函数将字符串转变成浮点数 客户端表单简单验证〈/title〉 〈script language=”javascript"〉function checkForm(){var username = document。myForm。userName。value;if(username=="”){alert(”用户名不能为空!") //调用表单元素对象的 focus 方法使得该表单元素对象重新获得输入焦点document。myForm.userName。focus();return false;}var p=document。myForm。pwd.value; if(p==”"){ alert(”密码不能为空!”) document.myForm.pwd.focus(); return false; }if(p.length<6||p.length>10) { alert(”密码长度不符合!长度在 6—10 之间") document.myForm.pwd.focus(); return false; } var xb = document.myForm.gender;var flag = false;for(var i = 0; i〈xb.length;i++){if(xb[i].checked){flag = true;}}if(!flag){alert("请选择性别!");return false;}} </script></head〉〈body〉<form action = "1。html” name="myForm” onsubmit="return checkForm();"〉 <table>〈tr>〈td〉用户名:</td〉<td〉〈input type =”text" name=”userName”/>〈/td〉〈/tr〉<tr><td〉密 码:〈/td〉〈td〉〈input type="password” name=”pwd"/>〈/td〉</tr〉〈tr〉〈td>性 别:〈/td〉〈td〉 〈input type="radio" name=”gender" va...</div></div><div class="pre-detail-bottom"><a class="pre-detail-more" href="javascript:;" kes-height="0">查看更多 <i class="icon-lower"></i></a></div></div></div><div class="noticeidtxt"><p>1、当您付费下载文档后,您只拥有了使用权限,并不意味着购买了版权,文档只能用于自身使用,不得用于其他商业用途(如 [转卖]进行直接盈利或[编辑后售卖]进行间接盈利)。<br>2、本站所有内容均由合作方或网友上传,本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺!文档内容仅供研究参考,付费前请自行鉴别。<br>3、如文档内容存在违规,或者侵犯商业秘密、侵犯著作权等,请点击“违规举报”。</p></div><div class="noticeidtxt"><p>碎片内容</p></div></div><div class="view-hd"><div class="container"><div class="view-hd-bd"><div class="format"><i class="file-icon 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