如何判断文本框中输入值在大于0而小于17,不符合条件的不能输入???? function test(value){ if(value-0 < 1 || value-0 >= 17) { alert('wrong'); return flase; }} 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 在dreamweaver中可以自动生成表单验证:<html><head><title>Untitled Document</title><script language="JavaScript"><!--function MM_findObj(n, d) { //v4.0 var p,i,x; if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) { d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);} if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n]; for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document); if(!x && document.getElementById) x=document.getElementById(n); return x;}function MM_validateForm() { //v4.0 var i,p,q,nm,test,num,min,max,errors='',args=MM_validateForm.arguments; for (i=0; i<(args.length-2); i+=3) { test=args[i+2]; val=MM_findObj(args[i]); if (val) { nm=val.name; if ((val=val.value)!="") { if (test.indexOf('isEmail')!=-1) { p=val.indexOf('@'); if (p<1 || p==(val.length-1)) errors+='- '+nm+' must contain an e-mail address.\n'; } else if (test!='R') { if (isNaN(val)) errors+='- '+nm+' must contain a number.\n'; if (test.indexOf('inRange') != -1) { p=test.indexOf(':'); min=test.substring(8,p); max=test.substring(p+1); if (val<min || max<val) errors+='- '+nm+' must contain a number between '+min+' and '+max+'.\n'; } } } else if (test.charAt(0) == 'R') errors += '- '+nm+' is required.\n'; } } if (errors) alert('The following error(s) occurred:\n'+errors); document.MM_returnValue = (errors == '');}//--></script></head><body bgcolor="#FFFFFF" text="#000000"><form name="form1" method="post" action="" onSubmit="MM_validateForm('textfield2','','R','textfield3','','NisNum','textfield4','','NisEmail','textfield5','','NinRange0:9');return document.MM_returnValue"> <p> anything: <input type="text" name="textfield"> </p> <p>required:<input type="text" name="textfield2"> </p> <p>number <input type="text" name="textfield3"> </p> <p> e-mail: <input type="text" name="textfield4"> </p> <p>number 0-9: <input type="text" name="textfield5"> </p> <p> <input type="submit" name="Submit" value="Submit"> </p></form></body></html> JS实现的音频播放控件,在点击进度条想快进,结果却是重头播放,求助大侠相助。。。谢谢 lightbox,多图模式如何只显示第一张? IFRAME 操作 父窗体无效? 请问SAAS平台是用什么语言开发的? 脚本语言为什么可以直接执行? 内网的服务器中毒了,每个jsp&html。。。都加了一条script (100分请教)如何实现baidu、hao123、265等的网页缓存技术 帮忙写一段代码检测非法字符 怎么设置帧的背景图 如何验证用户添入ID的有效性?就是说只能用字母、数字和下划线而不能包含别的字符 求一正则表达式 超级难!如果对象名称是个变量,如何引用该对象???
<head>
<title>Untitled Document</title>
<script language="JavaScript">
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</head><body bgcolor="#FFFFFF" text="#000000">
<form name="form1" method="post" action="" onSubmit="MM_validateForm('textfield2','','R','textfield3','','NisNum','textfield4','','NisEmail','textfield5','','NinRange0:9');return document.MM_returnValue">
<p> anything:
<input type="text" name="textfield">
</p>
<p>required:<input type="text" name="textfield2">
</p>
<p>number
<input type="text" name="textfield3">
</p>
<p> e-mail:
<input type="text" name="textfield4">
</p>
<p>number 0-9:
<input type="text" name="textfield5">
</p>
<p>
<input type="submit" name="Submit" value="Submit">
</p>
</form>
</body>
</html>