Overhead loading
Another cool feature from these plugins is that they provide animations for charts, making the final result very user friendly.
By loading the pieces of JavaScript code at the end of the HTML, we will acquire more speed in page rendering for the end user. The side effect of this is that the elements created by the JavaScript libraries will render the page after it is shown to the user, causing some temporary glitches in the screen.
To solve this, many pages use the strategy of creating an overlay loading that will be hidden after the document is ready.
To do this, just after the opening of the <body> tag, create a <div> to keep the loading, as follows:
<body> <div class="loading"> </div> … <!—rest of the HTML content --> </body>
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