多输入框字母限制-JS特效-爱易网页

多输入框字母限制

日期：2014-05-18　浏览次数：20285 次

欢迎光临爱易网网页脚本特效中心，点击运行按钮演示特效：

以下是程序代码

脚本说明:
把如下代码加入<body>区域中
<SCRIPT LANGUAGE="JavaScript">
<!-- Begin
oldvalue1=0;
oldvalue2=0;
oldvalue3=0;

function textCounterMulti(cntnum,toplimit,field1,field2,field3) {
var gtposition = new Array()
var ltposition = new Array()
var tagtext = new Array()
tagtext[0]=0;

var total_length=(field1.value.length+field2.value.length+field3.value.length);
var actual_length=(field1.value.length+field2.value.length+field3.value.length);
var totalstring=(field1.value+field2.value+field3.value);

// find how many less than signs we have

lt='1';
opencount = 0;
opos = totalstring.indexOf("<");
while ( opos != -1 ) {
   opencount++;
   ltposition[lt]=totalstring.indexOf("<",opos);
   opos = totalstring.indexOf("<",opos+1);
   total_length=ltposition[lt];
lt++
}

gt='1'
closecount = 0;
cpos = totalstring.indexOf(">");
while ( cpos != -1 ) {
   closecount++;
   gtposition[gt]=totalstring.indexOf(">",cpos);
   cpos = totalstring.indexOf(">",cpos+1);
gt++
}

for(tt=1;tt<=opencount;tt++){
//alert(gtposition[tt]+" is the position of closer # "+tt);
if (closecount == opencount){
//alert(tt);
tagtext[tt]=((gtposition[tt]+1)-(ltposition[tt]))
//alert(tagtext[tt])
if(tt>1){
tagtext[tt]=(tagtext[tt-1]+tagtext[tt])
//alert(tagtext[tt])
document.headermaker.textintags.value=tagtext[tt];
}
}
}
total_length=(actual_length-tagtext[opencount]);
if((closecount=='0')&(opencount!='0')){
total_length=actual_length-(actual_length-ltposition[opencount]);
}
if((closecount<opencount)&(closecount!='0')){
insideopencount=opencount-1;
//alert(tagtext[closecount]+"\n"+tagtext[opencount])
total_length=1//actual_length-tagtext[insideopencount]((actual_length-ltposition[opencount]));
}
if((closecount=='0')&(opencount=='0')){

total_length=actual_length;
}
//alert(actual_length-(actual_length-ltposition[opencount]))
var maxvalue1 = ((toplimit)-((field2.value.length)+(field3.value.length))+(tagtext[opencount]));
var maxvalue2 = ((toplimit)-((field1.value.length)+(field3.value.length))+(tagtext[opencount]));
var maxvalue3 = ((toplimit)-((field1.value.length)+(field2.value.length))+(tagtext[opencount]));
//alert(field3.value.length+", "+toplimit)

if ((field1.value.length > maxvalue1)&(toplimit!='0')&(oldvalue1 != field1.value.length)){
alert(field1.value.length+" is the length, the last gt sign is at "+field1.value.lastIndexOf(">")+" and the character at the end is "+field1.value.charAt(field1.value.length-1);)
field1.value.value = field1.value.substring(0, maxvalue1);
oldvalue1=field1.value.length;
oldvalue2=field2.value.length;
oldvalue3=field3.value.length;

}else
if ((field2.value.length > maxvalue2)&(toplimit!='0')&(oldvalue2 != field2.value.length)){
field2.value.value = field2.value.substring(0, maxvalue2);
oldvalue1=field1.value.length;
oldvalue2=field2.value.length;
oldvalue3=field3.value.length;

}else
if ((field3.value.length > maxvalue3)&(toplimit!='0')&(oldvalue3 != field3.value.length)){

field3.value.value = field3.value.substring(0, maxvalue3);
oldvalue1=field1.value.length;
oldvalue2=field2.value.length;
oldvalue3=field3.value.length;

// otherwise, update 'characters left' counter
}else{*/

if ((field1.value.length > maxvalue1)&(toplimit!='0')&(oldvalue1 != field1.value.length)){
//alert(field1.value.length+" is the length, the last gt sign is at "+field1.value.lastIndexOf(">")+" and the character at the end is "+field1.value.charAt(field1.value.length-1))
if(field1.value.charAt(field1.value.length-1)!=">"){
field1.value = field1.value.substring(0, maxvalue1);
//alert("you have exceeded the limit of "+toplimit+" characters for this item!\nYour text has been trimmed to fit, make changes and verify all paragraphs!")
}else </div></div>

<div class="clearfix"></div>
                    </div>
                    <nav aria-label="...">
                        <ul class="pager">
                            <li class="previous"><a href="4667">上一篇：狡猾的按钮特效</a></li>

<li class="next"><a href="2885">下一篇：层的限时显示</a></li>
                        </ul>
                    </nav>

<div class="alert alert-warning" role="alert">
                        <strong>免责声明：</strong> 本文仅代表作者个人观点，与爱易网无关。其原创性以及文中陈述文字和内容未经本站证实，对本文以及其中全部或者部分内容、文字的真实性、完整性、及时性本站不作任何保证或承诺，请读者仅作参考，并请自行核实相关内容。
                    </div>

<div class="col-md-6 col-xs-12">
                      <li class="articleAbout"><a href='/ItNews/34253' title='埃里克杰克森：阿里IPO估值至少1500亿美元' target="_blank">
                        埃里克杰克森：阿里IPO估值至少1500亿美元</a></li></div>
                   
                
                  <div class="col-md-6 col-xs-12">
                      <li class="articleAbout"><a href='/ItNews/6852' title='前苹果顾问批判iPhone命名：不应加S' target="_blank">
                        前苹果顾问批判iPhone命名：不应加S</a></li></div>
                   
                
                  <div class="col-md-6 col-xs-12">
                      <li class="articleAbout"><a href='/ItNews/6853' title='传运营商高层将变化 专家称需体制革新' target="_blank">
                        传运营商高层将变化 专家称需体制革新</a></li></div>
                   
                
                  <div class="col-md-6 col-xs-12">
                      <li class="articleAbout"><a href='/ItNews/10827' title='快递企业征收“份子钱” 成全了谁 苦了谁？' target="_blank">
                        快递企业征收“份子钱” 成全了谁 苦了谁？</a></li></div>
                   
                
                  <div class="col-md-6 col-xs-12">
                      <li class="articleAbout"><a href='/ItNews/34435' title='FDD牌照12月将发放 联通电信双4G反击中移动' target="_blank">
                        FDD牌照12月将发放 联通电信双4G反击中移动</a></li></div>
                   
                
                  <div class="col-md-6 col-xs-12">
                      <li class="articleAbout"><a href='/ItNews/34436' title='华为、小米和联想在中国手机市场上演“三国杀”' target="_blank">
                        华为、小米和联想在中国手机市场上演“三国杀”</a></li></div>
                   
                
                  <div class="col-md-6 col-xs-12">
                      <li class="articleAbout"><a href='/ItNews/34363' title='阿里物流搭上邮政：京东，我们在终点等你！' target="_blank">
                        阿里物流搭上邮政：京东，我们在终点等你！</a></li></div>
                   
                
                  <div class="col-md-6 col-xs-12">
                      <li class="articleAbout"><a href='/ItNews/16157' title='盘点改变社会的15种科技：谷歌眼镜将使我们成为半机械人' target="_blank">
                        盘点改变社会的15种科技：谷歌眼镜将使我们成为半机械人</a></li></div>
                   
                
                  <div class="col-md-6 col-xs-12">
                      <li class="articleAbout"><a href='/ItNews/6902' title='谷歌欲收买WhatsApp添加砝码 对方否认' target="_blank">
                        谷歌欲收买WhatsApp添加砝码 对方否认</a></li></div>
                   
                
        </ol>
    </div>
</div>

</div>

</div>
            </div>
            <div class="clearfix"></div>

<footer class=" footer navbar-bottom">
<em>友情链接：</em>
    
      <a href="http://www.aiyiweb.com/" target="_blank">爱易网 </a>            
    
      <a href="http://www.aiyiweb.com/" target="_blank">云虚拟主机技术 </a>            
    
      <a href="http://www.aiyiweb.com/" target="_blank">云服务器技术 </a>            
    
      <a href="http://www.aiyiweb.com/" target="_blank">程序设计技术 </a>            
    
      <a href="http://www.aiyiweb.com/" target="_blank">开发网站 </a>            
    
      <a href="http://www.aiyiweb.com/" target="_blank">APP开发教程 </a>            
    
<br />
<script type="text/javascript">(function(){document.write(unescape('%3Cdiv id="bdcs"%3E%3C/div%3E'));var bdcs = document.createElement('script');bdcs.type = 'text/javascript';bdcs.async = true;bdcs.src = 'http://znsv.baidu.com/customer_search/api/js?sid=15239353030108964139' + '&plate_url=' + encodeURIComponent(window.location.href) + '&t=' + Math.ceil(new Date()/3600000);var s = document.getElementsByTagName('script')[0];s.parentNode.insertBefore(bdcs, s);})();</script>

Copyright © 2013-2026 爱易网页 当前在线：299人　
        网站在5时16分33秒内访问总人数：56664人
    2秒前 65.92%
　<a href="https://beian.miit.gov.cn" target="_blank">粤ICP备18100884号-2 </a>
<script charset="UTF-8" id="LA_COLLECT" src="//sdk.51.la/js-sdk-pro.min.js"></script>
<script>LA.init({ id: "JszEmKrtpbU59dY5", ck: "JszEmKrtpbU59dY5" })</script>

</footer>

</div>
   
</body>
</html>