Home Web Front-end HTML Tutorial Introduction to speeding up HTML page loading

Introduction to speeding up HTML page loading

Sep 01, 2017 pm 03:18 PM
html speed

1. Page weight loss

a. The weight of the page is the most important factor affecting the loading speed.

b. Delete unnecessary spaces and comments.

c. Move the inline script and css to external files.

d. You can use HTML Tidy to lose weight for HTML, and you can also use some compression tools to lose weight for JavaScript.

2. Reduce the number of files

a. Reducing the number of files referenced on the page can reduce the number of HTTP connections.

b. Many JavaScript and CSS files can be merged and are best merged. Caibangzi has merged its own JavaScript. functions and Prototype.js into a base.js file.

3. Reduce domain name queries

a. DNS query and domain name resolution are also time-consuming, so it is necessary to reduce the references to external JavaScript, CSS, images and other resources, and the fewer different domain names are used The better.

4. Cache reused data

a. Cache reused data.

5. Optimize the loading order of page elements

a. First load the content initially displayed on the page and the JavaScript and CSS related to it, and then load HTML-related things, like what is not related to the initial display Very fat resources such as pictures, flash, and videos are loaded last.

6. Reduce the number of inline JavaScript

a. The browser parser will assume that inline JavaScript will change the page structure, so using inline JavaScript is more expensive.

b. Do not use document.write() to output content, use modern W3C DOM methods to handle page content for modern browsers.

7. Use modern CSS and legal tags a. Use modern CSS to reduce tags and images. For example, using modern CSS + text can completely replace some images with only text.

b. Use legal tags to prevent the browser from performing operations such as "error correction" when parsing HTML. It can also be used by HTML Tidy to slim down HTML.

8. Chunk your content a. Do not use nested tables, but use non-nested tables or divs. Break the layout based on a large nested table into multiple small tables, so that there is no need to wait until the entire page (or large table) content is loaded before displaying it.

9. Specify the size of images and tables

a. If the browser can immediately determine the size of the image or table, then it can display the page immediately without having to redo some layout arrangements. .

b. This not only speeds up the display of the page, but also prevents some inappropriate changes in the layout after the page is loaded.

c. Image uses height and width.

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