<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <meta name="GENERATOR" content="Microsoft FrontPage 4.0"> <meta name="ProgId" content="FrontPage.Editor.Document"> <title>New Page 1</title> </head> <body> <script language = 'javascript'> //校验是否为英文 function checkchar() { var Letters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" for (i=0; i < document.form.aaa.value.length; i++) { var CheckChar = document.form.aaa.value.charAt(i); CheckChar = CheckChar.toUpperCase(); if (Letters.indexOf(CheckChar) == -1) { alert ("输入类型必须为英文!"); return false; } } } //校验是否为数字 function checknum(p) { if (p == "") {alert ("输入不能为空!"); return false; } var l = p.length; var count=0; for(var i=0; i<l; i++) { var digit = p.charAt(i); if(digit == "." ) { ++count; if(count>1) {alert ("输入类型必须为数字!"); return false; } } else if(digit < "0" digit > "9") {alert ("输入类型必须为数字!"); return false; } } return true; } //校验IP地址格式 function checkip() { var scount=0; var ip = document.form3.ccc.value; var iplength = ip.length; var Letters = "1234567890."; for (i=0; i < document.form3.ccc.value.length; i++) { var CheckChar = document.form3.ccc.value.charAt(i); if (Letters.indexOf(CheckChar) == -1) { alert ("IP地址格式不对!!,只能输入数字和“.”,格式为XXX.XXX.XXX.XXX 例如:192.168.0.1"); document.form3.ccc.value=""; document.form3.ccc.focus(); return false; } } for (var i = 0;i<iplength;i++) (ip.substr(i,1)==".")?scount++:scount; if(scount!=3) { alert ("IP地址格式不对!,只能输入数字和“.”,格式为XXX.XXX.XXX.XXX 例如:192.168.0.1"); document.form3.ccc.value=""; document.form3.ccc.focus(); return false; } first = ip.indexOf("."); last = ip.lastIndexOf("."); str1 = ip.substring(0,first); subip = ip.substring(0,last); sublength = subip.length; second = subip.lastIndexOf("."); str2 = subip.substring(first+1,second); str3 = subip.substring(second+1,sublength); str4 = ip.substring(last+1,iplength); if (str1=="" str2=="" str3== "" str4 == "") {alert("数字不能为空!格式为XXX.XXX.XXX.XXX 例如:192.168.0.1"); document.form3.ccc.value=""; document.form3.ccc.focus(); return false; } if (str1< 0 str1 >255) {alert ("数字范围为0~255!"); document.form3.ccc.value=""; document.form3.ccc.focus(); return false; } else if (str2< 0 str2 >255) {alert ("数字范围为0~255!"); document.form3.ccc.value=""; document.form3.ccc.focus(); return false; } else if (str3< 0 str3 >255) {alert ("数字范围为0~255!"); document.form3.ccc.value=""; document.form3.ccc.focus(); return false; } else if (str4< 0 str4 >255) {alert ("数字范围为0~255!"); document.form3.ccc.value=""; document.form3.ccc.focus(); return false; } //校验电话号码 function checkphone() { var Letters = "1234567890,"; for (i=0; i < document.form4.ddd.value.length; i++) { var CheckChar = document.form4.ddd.value.charAt(i); if (Letters.indexOf(CheckChar) == -1) { alert ("电话号码只能为数字或逗号!"); return false; } } } } </script> <form name = "form" method="POST" action = "aa" onsubmit ="return checkchar()"> <p>校验英语字母:<input type="text" name="aaa" size="20"> </p> <p> <input type="submit" value="提交" name="B1"> <input type="reset" value="全部重写" name="B2"></p> </form> <form name = "form2" method="POST" onsubmit= "return checknum(document.form2.bbb.value)"> <p>校验数字:<input type="text" name="bbb" size="20"></p> <p><input type="submit" value="提交" name="B1"><input type="reset" value="全部重写" name="B2"></p> </form> <form name = "form3" method="POST" onsubmit = "return checkip()"> <p>校验IP地址:<input type="text" name="ccc" size="20"></p> <p><input type="submit" value="提交" name="B1"><input type="reset" value="全部重写" name="B2"></p> </form> <form name = "form4" method="POST" onsubmit = "return checkphone()"> <p>校验电话号码:<input type="text" name="ddd" size="20"><input type="submit" value="提交" name="B1"><input type="reset" value="全部重写" name="B2"></p> </form> </body> </html>
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