Then, we use the childNodes property to get an array-like collection of all child nodes of the parent element and store it in the childNodes variable. In this example, we first select the parent element using getElementById and store it in the parentElement variable. childNodes for ( let i = 0 i < childNodes. getElementById ( 'parent-id' ) const childNodes = parentElement. Here's an example code:Ĭonst parentElement = document. The querySelectorAll method returns a NodeList object containing a collection of elements that match the specified CSS selector. To get child element by class name in JavaScript, we can use the querySelectorAll method.

Use the descendant combinator ( ) in the CSS selector to get a child element that is not a direct descendant of the parent element.

Use querySelector or querySelectorAll on the parent element to get the child element(s) with the class name.

Use querySelector to get the parent element with the class name.

In summary, to get a child element by class name in JavaScript using querySelector, you can: In this example, we use querySelector to get the child element with the class name 'child' that is a descendant of an element with the class name 'grandparent', which is a descendant of the parent element with the class name 'parent'.

querySelector ( '.parent' ) const childElement = parentElement.

Javascript get element