HTML DOM querySelectorAll() Method
Example
Set the background color of the first element with class="example" inside of a <div> element:
// Get the element with id="myDIV" (a div), then get all elements inside div with class="example"
var x = document.getElementById("myDIV").querySelectorAll(".example");
// Set the background color of the first element with class="example" (index 0) in div
x[0].style.backgroundColor = "red";
Try it Yourself »
More "Try it Yourself" examples below.
Definition and Usage
The querySelectorAll() method returns a collection of an element's child elements that match a specified CSS selector(s), as a static NodeList object.
NodeList
A NodeList is an array-like collection (list) of nodes.
The nodes in the list can be accessed by index. The index starts at 0.
The length Poperty returns the number of nodes in the list.
Browser Support
The numbers in the table specifies the first browser version that fully supports the method.
| Method | |||||
|---|---|---|---|---|---|
| querySelectorAll() | 4.0 | 9.0 | 3.5 | 3.2 | 10.0 |
Note: Internet Explorer 8 has support for CSS2 selectors. IE9 and later versions have support for CSS3 as well.
Syntax
element.querySelectorAll(CSS selectors)
Parameter Values
| Parameter | Type | Description |
|---|---|---|
| CSS selectors | String | Required. Specifies one or more CSS selectors to match the element. These are used to select HTML
elements based on their id, classes, types, attributes, values of attributes,
etc. For multiple selectors, separate each selector with a comma. Tip: For a list of all CSS Selectors, look at our CSS Selectors Reference. |
Technical Details
| DOM Version: | Selectors Level 1 Document Object |
|---|---|
| Return Value: | A NodeList object, representing all descendant elements of the current element that matches a specified CSS selector(s). The NodeList is a static collection, meaning that changes in the DOM has NO effect in the collection. Note: Throws a SYNTAX_ERR exception if the specified selector(s) is invalid |
More Examples
Example
Get all <p> elements inside a <div> element, and set the background color of the first <p> element (index 0):
// Get the element with id="myDIV" (a div), then get all p elements inside div
var x = document.getElementById("myDIV").querySelectorAll("p");
// Set the background color of the first <p> element (index 0) in div
x[0].style.backgroundColor = "red";
Try it Yourself »
Example
Get all <p> elements in a <div> with class="example", and set the background of the first <p> element:
// Get the element with id="myDIV" (a div), then get all p elements with class="example" inside div
var x = document.getElementById("myDIV").querySelectorAll("p.example");
// Set the background color of the first <p> element with class="example" (index 0) in div
x[0].style.backgroundColor = "red";
Try it Yourself »
Example
Find out how many elements with class="example" there are in a <div> element (using the length property of the NodeList object):
/* Get the element with id="myDIV" (a div), then get all p elements with class="example" inside div, and return the number of elements found */
var x = document.getElementById("myDIV").querySelectorAll(".example").length;
Try it Yourself »
Example
Set the background color of all elements with class="example" in a <div> element:
// Get the element with id="myDIV" (a div), then get all elements with class="example" inside div
var x = document.getElementById("myDIV").querySelectorAll(".example");
// Create a for loop and set the background color of all elements with class="example" in div
var i;
for (i = 0; i < x.length; i++) {
x[i].style.backgroundColor = "red";
}
Try it Yourself »
Example
Set the background color of all <p> elements in a <div> element:
// Get the element with id="myDIV" (a div), then get all p elements inside div
var x = document.getElementById("myDIV").querySelectorAll("p");
// Create a for loop and set the background color of all p elements in div
var i;
for (i = 0; i < x.length; i++) {
x[i].style.backgroundColor = "red";
}
Try it Yourself »
Example
Set the border style of all <a> elements in a <div> element that have a "target" attribute:
// Get the element with id="myDIV" (a div), then get all <a> elements with a "target" attribute inside div
var x = document.getElementById("myDIV").querySelectorAll("a[target]");
// Create a for loop and set the border of all <a> elements with a target attribute in div
var i;
for (i = 0; i < x.length; i++) {
x[i].style.border = "10px solid red";
}
Try it Yourself »
Example
Set the background color of all <h2>, <div> and <span> elements in a <div> element:
// Get the element with id="myDIV" (a div), then get all <h2>, <div> and <span> elements inside <div>
var x = document.getElementById("myDIV").querySelectorAll("h2, div, span");
// Create a for loop and set the background color of all <h2>, <div> and <span> elements in <div>
var i;
for (i = 0; i < x.length; i++) {
x[i].style.backgroundColor = "red";
}
Try it Yourself »
Related Pages
CSS Tutorial: CSS Selectors
CSS Reference: CSS Selectors Reference
JavaScript Tutorial: JavaScript HTML DOM Node List
HTML DOM Reference: element.querySelector()
HTML DOM Reference: document.querySelectorAll()
