…ve images 4.8.4.2 Attributes common to source img , and link elements 4.8.4.2.1 Srcset attributes 4.8.4.2.2 Sizes attributes 4.8.4.3 Processing model 4.8.4.3.1 When to obtain images 4.8.4.3.2 Reacting to DOM mutations 4.8.4.3.3 The list of available images 4.8.4.3.4 Decoding imag…

…audio elements. While all of them contain source elements, the source element's src attribute has no meaning when the element is nested within a picture element, and the resource selection algorithm is different. Also, the picture element itself does not display anything; it mere…

…audio elements. While all of them contain source elements, the source element's src attribute has no meaning when the element is nested within a picture element, and the resource selection algorithm is different. Also, the picture element itself does not display anything; it mere…

…ontexts. The following policy has that effect: Content-Security-Policy : script-src https://cdn.example.com/scripts/; object-src 'none' 1.2. Goals Content Security Policy aims to do to a few related things: Mitigate the risk of content-injection attacks by giving developers fairl…

…t to provide a series of editing commands: li >< button onclick "copy()" >< img src "copy.svg" alt "Copy" ></ button ></ li li >< button onclick "cut()" >< img src "cut.svg" alt "Cut" ></ button ></ li li >< button onclick "paste()" >< img src "paste.svg" alt "Paste" ></ button >…

…on directive name . Note: Directive names are case-insensitive, that is: script-SRC 'none' and ScRiPt-sRc 'none' are equivalent. If policy ’s directive set contains a directive whose name is directive name , continue . Note: In this case, the user agent SHOULD notify developers t…

…able. protected resource ’s ability to load Workers is now controlled via child-src rather than script-src Workers now have their own policy, separate from the protected resource which loaded them. This is described in §5.1 Workers The following directives are brand new in this r…

…quotes are not required in any modern browser so they are omitted here): SCRIPT SRC ></ SCRIPT XSS Locator (Polyglot) This test delivers a 'polyglot test XSS payload' that executes in multiple contexts, including HTML, script strings, JavaScript, and URLs: javascript /*--></title…

… For example, consider the following CSP: http Content-Security-Policy: default-src 'self'; img-src 'self' example.com It sets two directives: the default-src directive is set to 'self' the img-src directive is set to 'self' example.com . The first directive, default-src , tells …

… For example, consider the following CSP: http Content-Security-Policy: default-src 'self'; img-src 'self' example.com It sets two directives: the default-src directive is set to 'self' the img-src directive is set to 'self' example.com . The first directive, default-src , tells …

… For example, consider the following CSP: http Content-Security-Policy: default-src 'self'; img-src 'self' example.com It sets two directives: the default-src directive is set to 'self' the img-src directive is set to 'self' example.com The first directive, default-src , tells th…

…fy the device associated with each number. 0123 456 7890 0123 456 7891 <p> <img src= "phone.png" alt= "Telephone" 0123 456 7890 </p> <p> <img src= "fax.png" alt= "Fax" 0123 456 7891 </p> Example 2: Images used to supplement other information The following image shows a dog wearin…

…s expressed using the a element and its href attribute, the img element and its src attribute, or other elements that link to or embed external resources. In this example, the item has one property, "image", whose value is a URL: < div itemscope > < img itemprop = "image" src = "…

…ration completes. */ scroll-snap-type: x mandatory div class "photoGallery" img src "img1.jpg" img src "img2.jpg" img src "img3.jpg" img src "img4.jpg" img src "img5.jpg" </ div The layout of the scroll container’s contents in the example. The snapport is represented by the red r…

… or unimportant graphics, use alt=” ” as your tag. Example Bullet <dl> <dd><img src=”bullet.gif” alt=”* “>John <dd><img src=”bullet.gif” alt=”* ” >Joseph <dd><img src=”bullet.gif” alt=”* “>Jeremy </dl> Image <img src=”topo.jpg” alt=”current routes at Boulders Climbing Gym”> Butto…