How to select a element using data attribute in JavaScript
In this tutorial, we are going to learn how to select/access an html element using the data attribute in JavaScript.
Consider, we have html elements with data attributes.
Now, we need to select the above elements by data attribute in JavaScript.
Selecting the Single element
To select the single element, we need to use document.querySelector() method by passing a [data-attribute = ‘value’] as an argument.
Selecting the Multiple elements
To select the multiple elements with the same data attribute name, we need to use the document.querySelectorAll() method by passing a [data-attribute] as an argument.
In the above example, the querySeletorAll() method returns the multiple elements in an array to access each element we need to loop through it.
How to Query Elements using Data Attribute in JavaScript
Sometimes it is useful to be able to query for elements in the DOM using their data attributes.
Data attributes are a way to associate data with elements in the DOM. Any attribute that starts with a data- prefix is considered a data attribute.
In this post, we will learn how to query for elements using their data attributes.
Querying for Elements Using Data Attributes
For our example, let’s assume this is our DOM:
Querying a Single Element
Let’s start with the simplest query, getting a single element. We’ll be using docuemnt.querySelector() to do this.
Simply pass in the data attribute name and value as arguments to document.querySelector() and you will get the element:
Querying Multiple Elements
You can go from querying a single element to querying multiple elements.
To do this, we will be using document.querySelectorAll() instead of document.querySelector() .
Let’s try querying all elements with the data-name attribute:
Notice that we get an array of elements back. This means we can loop through the array to get each element.
Here’s how we can use the forEach() method to loop through the array:
You can also use a normal for loop to get all the elements one-by-one:
Conclusion
In this post, we learned how to query for elements using their data attributes.
We can either get single elements using document.querySelector() or multiple elements using document.querySelectorAll() .
Hopefully, this has been useful to you. Happy coding!
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Как найти элемент по data атрибуту js
In this tutorial, we are going to learn how to select/access an html element using the data attribute in JavaScript.
Consider, we have html elements with data attributes.
Now, we need to select the above elements by data attribute in JavaScript.
Selecting the Single element
To select the single element, we need to use document.querySelector() method by passing a [data-attribute = ‘value’] as an argument.
Selecting the Multiple elements
To select the multiple elements with the same data attribute name, we need to use the document.querySelectorAll() method by passing a [data-attribute] as an argument.
In the above example, the querySeletorAll() method returns the multiple elements in an array to access each element we need to loop through it.
javascript: выберите все элементы с атрибутом» data — » (без jQuery)
Select all elements with a «data-xxx» attribute without using jQuery
Using only pure JavaScript, what is the most efficient way to select all DOM elements that have a certain data- attribute (let’s say data-foo ).
The elements may be different, for example:
7 Answers 7
will get you all elements with that attribute.
will only get you ones with a value of 1.
to get list of all elements having attribute data-foo
If you want to get element with data attribute which is having some specific value e.g
and I want to get div with data-foo set to «2»
But here comes the twist what if I want to match the data attirubte value with some variable’s value like I want to get element if data-foo attribute is set to i
so you can dynamically select the element having specific data element using template literals
Note even if you don’t write value in string it gets converted to string like if I write
and then inspect the element in Chrome developer tool the element will be shown as below
You can also cross verify by writing below code in console
why I have written ‘dataFoo’ though the attribute is data-foo reason dataset properties are converted to camelCase properties
Выбор элемента по атрибуту данных
Есть ли простой и прямой метод для выбора элементов на основе их атрибута data ? Например, выберите все привязки, у которых есть атрибут данных с именем customerID , который имеет значение 22 .
Я не решаюсь использовать rel или другие атрибуты для хранения такой информации, но мне гораздо труднее выбрать элемент, основанный на том, какие данные хранятся в нем.
11 ответов
Вы можете опустить * , но если я правильно помню, в зависимости от того, какую версию jQuery вы используете, это может дать неверные результаты.
Обратите внимание, что для совместимости с API-интерфейсом Selectors ( document.querySelector <,all>) кавычки вокруг значения атрибута ( 22 ) не могут быть опущены в этом случае.
Кроме того, если вы много работаете с атрибутами данных в сценариях jQuery, вам может потребоваться использовать плагин атрибутов пользовательских данных HTML5. Это позволяет вам писать еще более читаемый код с помощью .dataAttr(‘foo’) и приводит к меньшему размеру файла после минимизации (по сравнению с использованием .attr(‘data-foo’) ).