Now, when we want our JavaScript to target those elements, we only need to call the variable. It must also go inside quotation marks and parentheses. There is no prefix because this method is only looking at IDs. (‘chocolateCupcake’) : This is how we tell our method (. If we need to grab multiple elements, they should be assigned a class (which can be applied to multiple elements at once) instead. Click Variable Configuration and select the desired. In the User-Defined Variables section, click New. Note: Remember that in HTML, IDs are unique. To create a new user-defined variable: In the left navigation, click Variables. getElementByID : This is the method we’re running to tell our code to look over the document, and to find the first element with the specific ID we’re looking for. This is what our HTML element looks like:Ĭode from a text editor: const chocolateDescription = document.getElementById(‘chocolateCupcake’) Let’s break this down:Ĭonst chocolateDescription = : This is the variable being declared so that we can re-use it elsewhere in our code. To select an HTML ID using JavaScript we need to point to it and then store it as a variable. It must go inside quotation marks and parentheses. We must preface a class with a period (to tell it we’re looking for a class). (‘.vanillaCupcake’) : This is how we tell our method (. Note: If we want to find all elements with that class, we can use. In this case, we’re looking for a specific class. querySelector : This is the method we’re running to tell our code to look over the document, and to find the first element that matches the specific selector we’re looking for. JS Graphics JS Graphics JS Canvas JS Plotly JS Chart.js JS Google Chart JS D3.Code from a text editor: const vanillaDescription = document.querySelector(‘.vanillaCupcake’) Let’s break this down:Ĭonst vanillaDescription = : This is the variable being declared so that we can re-use it elsewhere in our code.ĭocument : This is telling the code to look at the document (i.e. JS vs jQuery jQuery Selectors jQuery HTML jQuery CSS jQuery DOM JS JSON JSON Intro JSON Syntax JSON vs XML JSON Data Types JSON Parse JSON Stringify JSON Objects JSON Arrays JSON Server JSON PHP JSON HTML JSON JSONP JS AJAX AJAX Intro AJAX XMLHttp AJAX Request AJAX Response AJAX XML File AJAX PHP AJAX ASP AJAX Database AJAX Applications AJAX Examples JS Web APIs Web API Intro Web Forms API Web History API Web Storage API Web Worker API Web Fetch API Web Geolocation API JS Browser BOM JS Window JS Screen JS Location JS History JS Navigator JS Popup Alert JS Timing JS Cookies lets say I have this element : Copy 0. var id existingProductArray i var html '
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