hyperlink

问题 I have some links displayed on a page. I would like to enable/disable them based on other events on the page. Is there a way to do this with jQuery? 回答1: $('selector_for_links_to_disable').bind('click', function(e){ e.preventDefault(); }) and for enabling: $('selector_for_links_to_enable').unbind('click') 回答2: You could do something like: $('.links').click(function(e){ if( [some conditions] ){ e.preventDefault(); } }); Be sure to show that they no longer work somehow, otherwise your users

问题 Is there anyway to listen to the onload event for a <link> element? F.ex: var link = document.createElement('link'); link.rel = 'stylesheet'; link.href = 'styles.css'; link.onload = link.onreadystatechange = function(e) { console.log(e); }; This works for <script> elements, but not <link> . Is there another way? I just need to know when the styles in the external stylesheet has applied to the DOM. Update: Would it be an idea to inject a hidden <iframe> , add the <link> to the head and listen

问题 I don't have a specific code issue I'm just not sure how to approach the following problem logistically with the Scrapy framework: The structure of the data I want to scrape is typically a table row for each item. Straightforward enough, right? Ultimately I want to scrape the Title , Due Date , and Details for each row. Title and Due Date are immediately available on the page... BUT the Details themselves aren't in the table -- but rather, a link to the page containing the details (if that

问题 hi there I am using this tag: <base href="http://awebsite.ca/” target=" /> in association with this tag: <a href=“main_page/mainpage.html”><br><b>main</b></br></a> and getting this in the browser: http://awebsite.ca/“main_page/mainpage.htmlâ€%C2%9D 回答1: You have to quote attribute values with " (QUOTATION MARK) or ' (APOSTROPHE), not “ (LEFT DOUBLE QUOTATION MARK) and ” (RIGHT DOUBLE QUOTATION MARK). This type of error is typically caused by writing code using a word processor (such as

问题 Is there any way I can launch an activity from a portion of a string. eg I have this in my strings.xml file: <string name="clickable_string">This is a <u>clickable string</u></string> I would like the text between the u tags to be underlined and launch an activity when clicked when inserted in to a TextView 回答1: Try this, final Context context = ... // whereever your context is CharSequence sequence = Html.fromSource(context.getString(R.string.clickable_string)); SpannableStringBuilder

问题 HTML is to <a href="x">y</a> as RTF is to _______ ? 回答1: {\field{\*\fldinst HYPERLINK "http://www.google.com/"}{\fldrslt http://www.google.com}} 回答2: The last article works fine. I even took it further to display multiple links (and replaced \par to \line tags in order to stay in the same paragraph). {\rtf1\ansi\ansicpg1252\deff0\deflang1033{\fonttbl{\f0\fnil\fcharset0 Calibri;}} {\colortbl ;\red0\green0\blue255;} {\*\generator Msftedit 5.41.21.2509;}\viewkind4\uc1\pard\sa200\sl276\slmult1

问题 I am examining some code for a friend, and have found that the developer who built his site began each and every relative src , href , and include with a forward slash / . For example: src="/assets/js/jquery.js" I have never seen this before. So my question is, why would a developer place a forward slash / at the start of a relative path? 回答1: It's done in order to root the path (making it an absolute path). It ensures that the path is not relative but read from the root of the site. This

问题 I need to let users of an application open a folder by clicking a link inside a web page. The path of the folder is on the network and can be accessed from everywhere. I'm probably sure there is no easy way to do this, but maybe I'm mistaken? 回答1: Do you want to open a shared folder in Windows Explorer? You need to use a file: link, but there are caveats: Internet Explorer will work if the link is a converted UNC path ( file://server/share/folder/ ). Firefox will work if the link is in its

问题 When I saw many sites' source code, parameters were passed to the linking file (CSS/JavaScript). In the Stack Overflow source, I got <script type="text/javascript" src="http://sstatic.net/js/master.js?v=55c7eccb8e19"></script> Why is master.js?v=55c7eccb8e19 used? I am sure that JavaScript/CSS files can't get the parameters. What is the reason? 回答1: It is usually done to prevent caching. Let's say you deploy version 2 of your new application and you want to cause the clients to refresh their

问题 When I saw many sites' source code, parameters were passed to the linking file (CSS/JavaScript). In the Stack Overflow source, I got <script type="text/javascript" src="http://sstatic.net/js/master.js?v=55c7eccb8e19"></script> Why is master.js?v=55c7eccb8e19 used? I am sure that JavaScript/CSS files can't get the parameters. What is the reason? 回答1: It is usually done to prevent caching. Let's say you deploy version 2 of your new application and you want to cause the clients to refresh their