Question

我只需要计算一些分数，而不是全部。假设你有这个html标记：

<div id="box">
 <div>
     <div>
     </div>
 </div>
<div>
     <div>
     </div>
 </div>
</div>

我需要直接从div计算<div>个孩子，其中id =＆＃34; box＆＃34;。在这个例子中，这些div的计数是2而不是4。

这是我的Jquery代码：

var count=$('#box')find('div').length;
console.log(count) // the result is 4 because counts all divs

任何人都可以帮助我？

Answer 1

#yourElement { -vendor-animation-duration: 3s; -vendor-animation-delay: 2s; -vendor-animation-iteration-count: infinite; }将遍历整个节点，而.find()将只检查直接后代：

.children()

相反，您可以在选择器中使用var count = $('#box').children('div').length;直接指定直接子项。像这样：

Answer 2

通过这种方式，您可以计算子元素：

<?xml version="1.0" encoding="UTF-8"?>
<env:Envelope xmlns:env="http://www.w3.org/2003/05/soap-envelope">
   <env:Header>
      <wsse:Security xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd" xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd" env:mustUnderstand="true">
         <xenc:EncryptedKey xmlns:xenc="http://www.w3.org/2001/04/xmlenc#" Id="EK-66D388AF0DD8D8AE061458643455700833237">
            <xenc:EncryptionMethod Algorithm="http://www.w3.org/2001/04/xmlenc#rsa-oaep-mgf1p" />
            <ds:KeyInfo xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
               <wsse:SecurityTokenReference>
                  <ds:X509Data>
                     <ds:X509IssuerSerial>
                        <ds:X509IssuerName>CN=Buypass Class 3 Test4 CA 3,O=Buypass AS-983163327,C=NO</ds:X509IssuerName>
                        <ds:X509SerialNumber>1111111111111111111</ds:X509SerialNumber>
                     </ds:X509IssuerSerial>
                  </ds:X509Data>
               </wsse:SecurityTokenReference>
            </ds:KeyInfo>
            <xenc:CipherData>
               <xenc:CipherValue>VSZMFYsHgVWPhhhBjcmITh2ElsViaRhmyVcLlyC9/iAh/gpIT1mhqocYRr3uDUZUVjNZba8wfRbVYTPAz/Kxix7faZ8+F23ANyhhKmrwxgn2SJdOVjYRYiVZZ/lgufYO4jFDnbkDjHeNxY6FZ/nxdB25OX18v5sWPkXtJQLKm3wQS6gQ8xc7K48lnIZDiKDGs0AyY4wCQ8rd0sI/odFma9h7661rs9Ei0WtzWU8reuhd/YGcaShY7qNnG/EguItnd4H4uEpgH09tCCge3R3vIw7LYK+qa5n97UVKe6ZZcRENZgyDR0PYx7bA+wcmGbHgZUivbc3FhJGwvXjGUu+3Xw==</xenc:CipherValue>
            </xenc:CipherData>
            <xenc:ReferenceList>
               <xenc:DataReference URI="#ED-66D388AF0DD8D8AE061458643455700833238" />
            </xenc:ReferenceList>
         </xenc:EncryptedKey>
         <wsse:BinarySecurityToken EncodingType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-soap-message-security-1.0#Base64Binary" ValueType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-x509-token-profile-1.0#X509v3" wsu:Id="X509-66D388AF0DD8D8AE061458643455693833232">MIIFDzCCA/egAwIBAgILCDNWTvJPbvLPzFQwDQYJKoZIhvcNAQELBQAwSzELMAu390STHWF1hjeDUZ8ep4u3cO0bwKHsdkrp/JIWQ6q8PpIJHcCDrz/tIKn2JLpxbQe9AR6KWDDzgfyRxoCyulOcnXoVH+CeSfieQ3WapR5VymxpPDA+jC6fccPfBDpKrOso4WpFFvwJbyEhxDAgJAXzwx1R3CrTFAfku8cck0h3v5E4</wsse:BinarySecurityToken>
         <ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#" Id="SIG-66D388AF0DD8D8AE061458643455696833236">
            <ds:SignedInfo>
               <ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#" />
               <ds:SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256" />
               <ds:Reference URI="#TS-66D388AF0DD8D8AE061458643455693833231">
                  <ds:Transforms>
                     <ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#" />
                  </ds:Transforms>
                  <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256" />
                  <ds:DigestValue>vUNvEQQFUqrUScQTwDrfVl+SEd/T5f/8RegkbE/Hcig=</ds:DigestValue>
               </ds:Reference>
               <ds:Reference URI="#id-66D388AF0DD8D8AE061458643455693833235">
                  <ds:Transforms>
                     <ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#" />
                  </ds:Transforms>
                  <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256" />
                  <ds:DigestValue>dv6BjR/TX8x1eYnlLyHCZQCQcdpOQ8o8CDE5mmCEYCw=</ds:DigestValue>
               </ds:Reference>
               <ds:Reference URI="#SC-66D388AF0DD8D8AE061458643455693833230">
                  <ds:Transforms>
                     <ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#" />
                  </ds:Transforms>
                  <ds:DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256" />
                  <ds:DigestValue>+F0GP7N7OlRpKR1yMRHn7F8ZYhCoPqDeDvjNMiQ5bHU=</ds:DigestValue>
               </ds:Reference>
            </ds:SignedInfo>
            <ds:SignatureValue>EAclVc0VHMFZtPFGCzwGrvMhp4W4Rmzf2Jke0oZeRcVKNpx88FSCfiCaEx5EaSs8zisbm8dQ7tDSWGnOWgVw1i6S0BXrq5g7Vn2+YZxmKJdJVxwtFAvCl9mXWF7gSgPVX8OYPmSFQ7I9cGaUr8/Sh5o3qClmNez/H4jOSgGXx6zXHqqG3FSkgaXaf0dfY6CgybTff2WG5dfnIdP4tfvllbNfzJa6Lgx8gsGZfG6J1c71mhBSo4ogejW64D0yjWBSGIdsrnAvgZZpXUs3ecR1za+GGUb9UhKLYoaiZZ1XO5fwOZM9TwXkmOwIG8mLbiXMnbsVmC5lyI5ARyZzrDRTmg==</ds:SignatureValue>
            <ds:KeyInfo Id="KI-66D388AF0DD8D8AE061458643455693833233">
               <wsse:SecurityTokenReference wsu:Id="STR-66D388AF0DD8D8AE061458643455693833234">
                  <wsse:Reference URI="#X509-66D388AF0DD8D8AE061458643455693833232" ValueType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-x509-token-profile-1.0#X509v3" />
               </wsse:SecurityTokenReference>
            </ds:KeyInfo>
         </ds:Signature>
         <wsu:Timestamp wsu:Id="TS-66D388AF0DD8D8AE061458643455693833231">
            <wsu:Created>2016-03-22T10:44:15.693Z</wsu:Created>
            <wsu:Expires>2016-03-22T10:45:15.693Z</wsu:Expires>
         </wsu:Timestamp>
         <wsse11:SignatureConfirmation xmlns:wsse11="http://docs.oasis-open.org/wss/oasis-wss-wssecurity-secext-1.1.xsd" Value="1uzncWE+stuYWDjMt6dPyFpt1UAiyFjvWlA/sSV+2y2dqJ+GmE9/izZqgZ07Nhz1+TFnjX8h/ZvjbSpZEk9H280zJXYP8mVk87rz5qOD8ivt2T1m4zOIMNIvtvCwAGSN+ozTA7HWuzRELbMjiHbFwsLsBXtmmO0hngytyMyFvcnxThKcfb2wAsyhW6pnVX9Fu9OHKLIoktdYKX5ofXWxu8aH6OjfnbexKIa6URATpQIuLjPmQFh6t9YZcBnpHJuKcydIZBQGKEd9h41crVDrVQJ1YEGGmX4XKhLaEOFx/i+kMMjFfrowzodLxMx0vKW73vvhydv3BIWyWROo6X4JDg==" wsu:Id="SC-66D388AF0DD8D8AE061458643455693833230" />
      </wsse:Security>
   </env:Header>
   <env:Body xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd" wsu:Id="id-66D388AF0DD8D8AE061458643455693833235">
      <xenc:EncryptedData xmlns:xenc="http://www.w3.org/2001/04/xmlenc#" Id="ED-66D388AF0DD8D8AE061458643455700833238" Type="http://www.w3.org/2001/04/xmlenc#Content">
         <xenc:EncryptionMethod Algorithm="http://www.w3.org/2001/04/xmlenc#aes256-cbc" />
         <ds:KeyInfo xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
            <wsse:SecurityTokenReference xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd" xmlns:wsse11="http://docs.oasis-open.org/wss/oasis-wss-wssecurity-secext-1.1.xsd" wsse11:TokenType="http://docs.oasis-open.org/wss/oasis-wss-soap-message-security-1.1#EncryptedKey">
               <wsse:Reference URI="#EK-66D388AF0DD8D8AE061458643455700833237" />
            </wsse:SecurityTokenReference>
         </ds:KeyInfo>
         <xenc:CipherData>
            <xenc:CipherValue>Zl4kpoGYlFRXJ453SZIHxR4VVdzMCfnfTQogResKRu1PO8vHt6Azkc3/q0R0duPdUuttwQDGOUls+jw==</xenc:CipherValue>
         </xenc:CipherData>
      </xenc:EncryptedData>
   </env:Body>
</env:Envelope>

正在运行的脚本： https://jsfiddle.net/6yg3e0f9/2/

如果您将其作为html文件运行，您将看到警报（4）和警报（2）都有效。

如何避免计算html页面中的所有div元素[JQUERY]

2 个答案: