参考:stackoverflow – Does :before not work on img elements? CSS Image Sprites Link to W3Schools 以前常用于把多个 icon 放到 1 个 image 里. 通过background-image + position 调出图片然后显示某个区域而已 CSS Attribute Selectors Link to W3Schools [target] = 有 attribute "target" [target="_blan...
matches(".container, .wrapper")) { element.innerHTML = "This element matches either the \".container\" CSS selector or the \".wrapper\" selector."; } else { element.innerHTML = "This element does not match any of the selectors."; } </script> </body> </html> ...
<h2>This is a heading</h2> <p>This is a paragraph.</p> <p><a href="https://www.w3schools.com/html/" target="_blank">This is a link</a></p> <p><a href="https://www.w3schools.com/css/">This is also link</a></p> </body> </html> ...
Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, PHP, Python, Bootstrap, Java and XML.
$(":root").css("background-color", "yellow"); Try it Yourself » Definition and UsageThe :root selector selects the document's root element. In HTML, the root element is always the <html> element.Syntax$(":root") ❮ jQuery Selectors...
Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more.
<h2>This is a heading</h2> <p>This is a paragraph.</p> <p><a href="https://www.w3schools.com/html/">This is a link</a></p> <p><a href="https://www.w3schools.com/css/">This is also link</a></p> </body> </html> ...
jQuery Overview jQuery Selectors jQuery Events jQuery Effects jQuery HTML/CSS jQuery Traversing jQuery AJAX jQuery Misc jQuery Properties jQuery ajaxStop() Method❮ jQuery AJAX MethodsExampleTrigger an alert box when all AJAX requests have completed:$(document).ajaxStop(function(){ alert("All AJAX ...
jQuery Overview jQuery Selectors jQuery Events jQuery Effects jQuery HTML/CSS jQuery Traversing jQuery AJAX jQuery Misc jQuery Properties jQuery ajaxError() Method❮ jQuery AJAX MethodsExampleTrigger an alert box when an AJAX request fails:$(document).ajaxError(function(){ alert("An error occurred!
jQuery Overview jQuery Selectors jQuery Events jQuery Effects jQuery HTML/CSS jQuery Traversing jQuery AJAX jQuery Misc jQuery Properties jQuery ajaxSuccess() Method❮ jQuery AJAX MethodsExampleTrigger an alert box when an AJAX request completes successfully:$(document).ajaxSuccess(function(){ alert("...