WaitForTheElement

A utility library that enables you to efficiently wait for an element to appear or disappear.

Usage

This module can be treated as an ES module:

import { waitForTheElement, waitForTheElementToDisappear } from 'wait-for-the-element';

This module can also be treated as a CommonJS module:

const { waitForTheElement, waitForTheElementToDisappear } = require('wait-for-the-element');

Waiting for an element

You can wait for an element to match a provided selector and retrieve it:

const element = await waitForTheElement('.target', {
  timeout : 5000
});

if (element === null)
{
  // After 5 seconds, a matching element still doesn't exist.
}

Important Note: If the selector matches multiple elements, only the first match will be returned.

Waiting for an element to disappear

You can wait for all elements to stop matching a provided selector:

const hidden = await waitForTheElementToDisappear('.target', {
  timeout : 5000
});

if (!hidden)
{
  // After 5 seconds, a matching element still exists.
}

Selectors

All functions accept CSS selectors supported by document.querySelector().

Options

All functions accept an optional settings object that control how elements are searched for:

Options	Required	Default	Description
timeout	No	2500	The maximum amount of time (in milliseconds) to wait.
scope	No	document	The root element to start searching from.

Getting started

This module is available through the Node Package Manager (NPM):

npm install wait-for-the-element

Development

Building

You can build UMD and ESM versions of this module that are both ES5 compatible and minified:

npm run build

Testing

This module also has a robust test suite:

npm test

This includes a code quality check using ESLint. Please refer to the .eslintrc files to familiar yourself with the rules.

License

This project is released under the MIT license.