create a sheet in javascript

To create a sheet in JavaScript, you can use the DOM createElement() method to create a style element and then append it to the head of the HTML document.

Here's an example code snippet that creates a style sheet and sets some styling rules:

index.tsx
// Create the style sheet
var styleSheet = document.createElement('style');
styleSheet.type = 'text/css';

// Define some styling rules
var styles = `
    body {
        background-color: #f2f2f2;
    }
    h1 {
        color: blue;
        text-align: center;
    }
`;

// Add the rules to the style sheet
styleSheet.appendChild(document.createTextNode(styles));

// Add the style sheet to the head of the document
document.head.appendChild(styleSheet);
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This code creates a style element, sets its type to 'text/css', and adds some CSS rules to it as a string. The rules are then added to the style element as a text node using the createTextNode() method. Finally, the style element is added to the head of the document using the appendChild() method.