API proposed by Chrome: Declarative partial updates

Chrome is proposing new Declarative Partial Updates APIs to allow HTML to be delivered out-of-order rather than in the traditional top-to-bottom fashion, improving performance for modern web applications. The proposal introduces processing instruction placeholders (like ``) and template elements that can dynamically insert content at specified locations, reducing the need for heavy JavaScript frameworks and verbose DOM manipulation. These APIs are available for testing in Chrome 148 and are being standardized with positive feedback from other browser vendors.