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Javascript 2022-02-01 13:26:17
event listener for functional component
import React, { useEffect } from 'react'; const Component = (props) => { useEffect(() => { window.addEventListener('scroll', handleScroll); }); useEffect(() => { return () => { window.removeEventListener('scroll', handle... Add solution -
Other 2021-09-22 15:50:03
= document.getElementById(next);
/** * Copyright (c) Facebook, Inc. and its affiliates. * * This source code is licensed under the MIT license found in the * LICENSE file in the root directory of this source tree. */ /* eslint-disable */ (function scrollSpy() { var OFFSET = 10; ... Add solution -
Other 2021-09-11 03:01:02
class="lazy"
/* lazyload.js (c) Lorenzo Giuliani * MIT License (http://www.opensource.org/licenses/mit-license.html) * * expects a list of: * `<img src="blank.gif" data-src="my_image.png" width="600" height="400" class=... Add solution -
Javascript 2021-08-27 23:54:02
react bootstrap hide toggle menu when scrolling down
import React, { Component } from 'react'; class App extends Component { constructor(props) { super(props); this.state = { scrollBackground: 'nav-bg' }; this.handleScroll = this.handleScroll.bind(this); } handleScroll(){... Add solution