Selector.find Method

Finds a descendant node that matches the specified CSS selector or predicate.

Syntax #

find(cssSelector) #

Selector().find(cssSelector) → Selector

Finds the descendant nodes of all nodes in the matched set and uses a CSS selector to filter them.

Argument	Type	Description
`cssSelector`	String	The CSS selector string used to filter child elements.

find(filterFn, dependencies) #

Selector().find(filterFn, dependencies) → Selector

Finds the descendant nodes of all nodes in the matched set and uses a predicate to filter them.

Argument	Type	Description
`filterFn`	Function	The predicate used to filter the elements.
`dependencies` (optional)	Object	Functions, variables, or objects passed to the `filterFn` function.

See Filtering DOM Elements by Predicates.

Example #

// Selects input elements that are descendants
// of div elements with the someClass class.
Selector('div.someClass').find('input');

Filtering DOM Elements by Predicates #

Functions that search for elements in the DOM tree allow you to use a filterFn predicate to filter the matched set.

The filterFn predicate is executed on the client side and accepts the following parameters:

Parameter	Description
`node`	The current matching node.
`idx`	A matching node's zero-based index.
`originNode`	A node from the left-hand selector's matched set whose parents/siblings/children are being iterated.

Selector('section').prevSibling((node, idx, originNode) => {
    // node === the <section>'s preceding sibling node
    // idx === index of the current <section>'s preceding sibling node
    // originNode === the <section> element
});

The dependencies parameter allows you to pass objects to the filterFn client-side scope where they appear as variables.

const isNodeOk = (node, idx, originNode) => { /*...*/ };

Selector('ul').prevSibling((node, idx, originNode) => {
    return isNodeOk(node, idx, originNode);
}, { isNodeOk });