Use of Robots meta tag [zz: http:www.gccgle.com2004-0220040206233621.html]

xiaoxiao2021-03-06  53

Use of Robots Meta Tag

Robots Meta Tag is used to tell a web root that can be indexed and can track the links on the page. The marker element has occupied the increasingly important position. Moreover, it is also applied to the control permission without the robots.txt file on the top of the server, and some search engines have fully followed Robots Meta Tag, such as inktomi. Robots Meta Tag format: The Robots Meta TAG is placed in the background HTML source In the header area of ​​the code (HEAD zone), its format is similar to: (large-lowercase)

... </ title></p> <p></ HEAD></p> <p><Body></p> <p>...</p> <p>Robot Meta Tag Options:</p> <p>There are four instructions that can be used in a Robots Meta Tag: INDEX, NOINDEX, FOLLOW, and NOFOLLOW, "," separated. among them:</p> <p>INDEX instruction: indicates that Robot can index this page;</p> <p>FOLLOW instruction: Indicates that Robot can track this page link;</p> <p>NOINDEX instruction: Represents the reject the Robot index this page, but track the links on the page;</p> <p>NOFOLLOW Directive: Represents the rejection of the Robot trace this page, but can index this page.</p> <p>Example:</p> <p><Meta name = "robots" Content = "INDEX, FOLLOW"></p> <p><Meta name = "robots" Content = "NoIndex, Follow"></p> <p><Meta name = "robots" Content = "INDEX, NOFOLLOW"></p> <p><Meta name = "robots" Content = "NoIndex, Nofollow"></p> <p>In some search engine articles about Robots Meta Tag, predefined default settings are INDEX and FOLLOW. However, it is not the case for INKTOMI. The default item of INKTOMI is INDEX and NOFOLLOW.</p> <p>There are also two global instructions: all and none.</p> <p>All = index, FOLLOW: Indicates that you can index this page and track the link;</p> <p>None = noIndex, NOFOLLOW: Indicates that the page is not allowed and the link is not allowed to track the link.</p></div><div class="text-center mt-3 text-grey"> 转载请注明原文地址:https://www.9cbs.com/read-107968.html</div><div class="plugin d-flex justify-content-center mt-3"></div><hr><div class="row"><div class="col-lg-12 text-muted mt-2"><i class="icon-tags mr-2"></i><span class="badge border border-secondary mr-2"><h2 class="h6 mb-0 small"><a class="text-secondary" href="tag-2.html">9cbs</a></h2></span></div></div></div></div><div class="card card-postlist border-white shadow"><div class="card-body"><div class="card-title"><div class="d-flex justify-content-between"><div><b>New Post</b>(<span class="posts">0</span>) </div><div></div></div></div><ul class="postlist list-unstyled"> </ul></div></div><div class="d-none threadlist"><input type="checkbox" name="modtid" value="107968" checked /></div></div></div></div></div><footer class="text-muted small bg-dark py-4 mt-3" id="footer"><div class="container"><div class="row"><div class="col">CopyRight © 2020 All Rights Reserved </div><div class="col text-right">Processed: <b>0.041</b>, SQL: <b>9</b></div></div></div></footer><script src="./lang/en-us/lang.js?2.2.0"></script><script src="view/js/jquery.min.js?2.2.0"></script><script src="view/js/popper.min.js?2.2.0"></script><script src="view/js/bootstrap.min.js?2.2.0"></script><script src="view/js/xiuno.js?2.2.0"></script><script src="view/js/bootstrap-plugin.js?2.2.0"></script><script src="view/js/async.min.js?2.2.0"></script><script src="view/js/form.js?2.2.0"></script><script> var debug = DEBUG = 0; var url_rewrite_on = 1; var url_path = './'; var forumarr = {"1":"Tech"}; var fid = 1; var uid = 0; var gid = 0; xn.options.water_image_url = 'view/img/water-small.png'; </script><script src="view/js/wellcms.js?2.2.0"></script><a class="scroll-to-top rounded" href="javascript:void(0);"><i class="icon-angle-up"></i></a><a class="scroll-to-bottom rounded" href="javascript:void(0);" style="display: inline;"><i class="icon-angle-down"></i></a></body></html><script> var forum_url = 'list-1.html'; var safe_token = 'LIne5464NGDlqNa64pbIfdh7jN4YbtcCOqsNC5s9N4qZQDQF9VtKsiaWlWm0o5P5BL8UUSxtCWakUTCjsSzWww_3D_3D'; var body = $('body'); body.on('submit', '#form', function() { var jthis = $(this); var jsubmit = jthis.find('#submit'); jthis.reset(); jsubmit.button('loading'); var postdata = jthis.serializeObject(); $.xpost(jthis.attr('action'), postdata, function(code, message) { if(code == 0) { location.reload(); } else { $.alert(message); jsubmit.button('reset'); } }); return false; }); function resize_image() { var jmessagelist = $('div.message'); var first_width = jmessagelist.width(); jmessagelist.each(function() { var jdiv = $(this); var maxwidth = jdiv.attr('isfirst') ? first_width : jdiv.width(); var jmessage_width = Math.min(jdiv.width(), maxwidth); jdiv.find('img, embed, iframe, video').each(function() { var jimg = $(this); var img_width = this.org_width; var img_height = this.org_height; if(!img_width) { var img_width = jimg.attr('width'); var img_height = jimg.attr('height'); this.org_width = img_width; this.org_height = img_height; } if(img_width > jmessage_width) { if(this.tagName == 'IMG') { jimg.width(jmessage_width); jimg.css('height', 'auto'); jimg.css('cursor', 'pointer'); jimg.on('click', function() { }); } else { jimg.width(jmessage_width); var height = (img_height / img_width) * jimg.width(); jimg.height(height); } } }); }); } function resize_table() { $('div.message').each(function() { var jdiv = $(this); jdiv.find('table').addClass('table').wrap('<div class="table-responsive"></div>'); }); } $(function() { resize_image(); resize_table(); $(window).on('resize', resize_image); }); var jmessage = $('#message'); jmessage.on('focus', function() {if(jmessage.t) { clearTimeout(jmessage.t); jmessage.t = null; } jmessage.css('height', '6rem'); }); jmessage.on('blur', function() {jmessage.t = setTimeout(function() { jmessage.css('height', '2.5rem');}, 1000); }); $('#nav li[data-active="fid-1"]').addClass('active'); </script>