The starts with, ends with, and contains () selectors also can be used to select the specified string. Even though the name suggests otherwise, these are not specific to HTML5 and you can use the data-* attribute on all HTML elements. But that all changed with the introduction of HTML5 custom data attributes. The official Web Dev Simplified blog by Kyle Cook. The data-* attributes is used to store custom data private to the page or application. The data- attribute is a custom attribute developers can add to whichever HTML tag they want. ; In ECMAScript 5 below, undefined can actually be overwritten, but this should not matter much if you're in control of the coding. How to use GET method to send data in jQuery Ajax? This API is arguably no… You want to write JavaScript so that the first button opens modal 1 and the second button opens modal 2, but we want to do this in a way that is reusable so if we add a third button that opens a new modal we don’t need to write any new JavaScript code. However, data within the object can be referenced by key with .data("foo") or the entire object can be returned with .data().. The both's answers are "Use .attr('data-sth') or .data('sth')". Using data-* attributes in JavaScript and CSS. In our real-world example we’re going to be making a simple item picker using these HTML5 Data Attributes and Javascript. When an attribute does not exist on an element some browsers return it as undefined and some as boolean false, therefore, we need to check for both values. To keep code consistent this is my preference. The source for this interactive example is stored in a GitHub repository. jQuery itself uses the .data() method to save information under the names 'events' and 'handle', and also reserves any data name starting with an underscore ('_') for internal use. You can use this jquery data() syntax for get data-textval attribute value. This is the equivalent of jQuery's $.data() method. Schauen wir uns dazu ein Beispiel an. Deleting data attributes is a bit different since we need to actually remove the property from our object. How to find an element based on a data-attribute value in jQuery? HTML5 data-* Attributes. So dynamic that you can modify native objects if you so choose. All code MIT license. For instance, let’s say you have a list of different restaurants on a webpage. Data attribute while passing values such as config params is useful it can be used to select 1 or multiple elements. The data-* global attributes form a class of attributes called custom data attributes, that allow proprietary information to be exchanged between the HTML and its DOM representation by scripts. Custom data attributes (data-*) can be used to store extra information for an HTML element. Here you can see that two type of get data attribute methods are :-.data(‘attribute’) method.attr(‘attribute full name’) method.data(‘attribute’) method . To select all anchors with the data attribute data-customerID==22, you should include the a to limit the scope of the search to only that element type. We’re very familiar with getting or setting data attributes with jQuery but we had to do a little research to figure out how to get and set data attributes with Javascript. An element's data-* attributes are retrieved the first time the data() method is invoked upon it, and then are no longer accessed or mutated (all values are stored internally by jQuery). 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