When a site has a lot of JS code to load, JS code placed in a certain degree will image the loading speed of the Web page, in order to let our web page loading faster, this article summed up a few points of attention:
1. Delay Loading JS code
Copy Code code as follows:
This way by delaying
Internet users do not like to use too much time to wait for the opening of the web, the longer the waiting, the user may directly close the page, so it will lose a lot of traffic! Secondly, the ranking of keywords and the opening speed of the Web page also has a relationship, the main embodiment of the search engine on the user experience, the user experience is
page is almost too slow to open, you say it will continue to waste time crawling around you? You know, it takes a lot of pages to crawl every day, and if your pages load too slowly or even open, It will be shallow crawl or simply leave your site, which can be judged, the loading speed of the Web page is included or ha
loads slowly, but the subsequent page will be much faster. When users visit other pages of this site, the CSS style and JS code are also referenced by other pages. Browser found that it has been downloaded, the next time you can not download. This will do a download, the effect of subsequent speed.4. Using Stored ProceduresBefore running the stored procedure, the database has been analyzed by syntax and sy
files that will be used in the future.rel= "prefetch" href= "/some_other_resource.jpeg"> The entire page is rendered in the background by a pre-read method.rel= "PreRender" href= "//domain.com/next_page.html " >SummaryPreloading is not a new technology, it's memorable for improving browser performance, and we don't need to do anything to use preloading.It is widely used, and I have tested the following browsers, all with preloaded features:
Article Introduction: use in.js granular to manage and load your JavaScript modules.
In the past year, both at home and abroad are very enthusiastic about the research of asynchronous loading, in order to speed up the loading speed of the page, non-blocking loading JavaScript method and framework has become
Advertising | load | speed | Web site Some webmaster may have experience. Do some affiliate commercials. Due to the slow loading of the Affiliate ads, the overall page display speed has been severely affected. So I posted the following code.
The first step: put this code in the pag
Article Introduction: use CSS sprites to reduce picture requests.
In the network era of "user experience" as the center, do you close the Web page because it is too slow to open the page? Believe that many people's answer is yes. In the high-speed network era, do not challenge the patience of Guangdong netizens, or will only lead to users away from yo
Found that a lot of sites in the place Baidu share code, simply put the share code to the fixed page location on the finished, this is a very lethal way. Because, I often open a Web page, found in the Web page load to share code, sometimes spend a few seconds to request the Baidu server, the last Show Sharing button.In
different regions. But as you can see, the pages in these countries are a little bit abnormally low.
Cucumbertown is an asset-heavy web site, and although we postponed all the action on Requiejs and then actively loaded JavaScript on demand, we made a lot of effort to load the underlying script.
We have confirmed that Cucumbertown's loading time in the United States is 2.5 seconds, compared to other countries this is simply the
Today's mobile phone to see the comic connected to WiFi speed Ka Chengwang, helpless extremely.Just learn the front-end, there is to improve the content of the loading speed, but only mentioned, have not formally learned, their own online check to see, share.Optimize Web page picture filesPicture using height and Width propertiesCSS file compression thin bodyAdd
Advertising | tips | load | speed | Web page do some alliance ads, because the federation ads slow loading, the overall page display speed will be slow, if you add the following code can effectively solve this problem.
The first step: put this code in the
:
Leverage browser Caching: The idea is that some files need to be cached; Click on the suggestion, Page speed will list detailed recommendations for improvement, as shown: This proposal lists some of the resources on the Web site that can be cached because these resources do not change frequently, But every time a user refreshes the site, it sends a request to the server, which affects the loading
div and table differences in all aspects of performance are obvious, such as speed and load mode differences, in the Web application of the difference, and so on, many, the following detailed finishing a bit, like friends can refer to, hope can help you better understand the difference between DIV and table
1: Difference in speed and
side of the calculation size, if a lot of pictures, browsers need to constantly adjust the page.)This not only affects speed, it also affects the browsing experience. When the browser knows the height and width parameters, even if the picture is temporarily unable to display, the page will free up the picture, and then continue to
Found that a lot of sites in the place Baidu share code, simply put the share code to the fixed page location on the finished, this is a very lethal way. Because, I often open a Web page, found in the Web page load to share code, sometimes spend a few seconds to request the Baidu server, the last Show Sharing button.
Especially in mobile phone-side access, the first time users open the site, if you get feedback for too long, the user is likely to finish loading the page before leaving, will not be visited again. Therefore, Web sites, web apps, to increase the load speed of the first visit is particularly important. The first load
To add this effect, first figure out the loading of the page and the sequence of event execution, see this simple example:
Execution Result: 9 rows >14 rows >11 rows, 9 lines of code placed in different positions, the result remains the same. To understand the above order, if you want to let the page before loading display jquery Mobile loader, and then the
Everyone is the site speed for the importance of successful sites, countless data prove that if the site opened more than five seconds, more than One-third users will choose to leave. Based on this understanding, slow Web site conversion rate is the killer. But designers tend to attribute these slow-speed reasons to server-side forces.
The reason that causes the slow s
defer scripts, on the other hand, is guaranteed to being executed in the order they occur in the page. That execution starts after parsing was completely finished, but before the document ' s domcontentloadedHere's an example of a external script which takes 1 second to download followed by an inline script which takes 1 secon D to execute. We can see this page loads in about 2 seconds.Here are the sa
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