Reduce Load Time¶

React is a JavaScript library used for building user interfaces on websites and web applications. It's a popular choice among developers because it makes it easier to create interactive and dynamic web pages. React allows you to break down your user interface into reusable components, which can help streamline development and improve code maintainability.

Now, when it comes to loading external scripts in React, it can sometimes be a bit tricky. This challenge primarily arises from React's way of managing the DOM (Document Object Model) and its focus on ensuring a single source of truth for the UI.

Here's a simplified explanation:

1. Virtual DOM: React uses a Virtual DOM, which is a lightweight representation of the actual DOM. When you update something in your React component, it first updates the Virtual DOM, not the real DOM. This is done for efficiency because changing the real DOM can be slow and resource-intensive.

2. Asynchronous Updates: React often updates the DOM asynchronously. This means that when you load an external script, it might not immediately be recognized or integrated into the Virtual DOM or the actual DOM. React might not "see" the changes made by the script right away.

Solving this issue¶

There is a work-around. In JavaScript, window.onload is an event handler that's used to execute a function or a block of code when a web page has finished loading completely. It's like telling JavaScript, "Hey, wait until everything on the web page is ready, including all images, styles, and scripts, and then do something."

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13

<script>
    (function () {

        // start window.onload
        window.onload = function() {
         'use strict';

                // experiment code here
         };
        // end window.onload

    })();
</script>

Keep in mind that it increasing the change of the flickering effect.