javascript stop refreshing

In web pages, sometimes we need to stop the automatic refresh of the page. This requirement usually occurs when we need to perform some specific operations, and these operations require a page to be fully loaded before we can proceed to the next step. In this case, we need to control the automatic refresh of the page to meet our needs.

In this process, the JavaScript language plays a major role. After all, JavaScript is an indispensable part of our front-end program development. It can make our pages richer, more interesting, and more interactive. In the following content, we will learn how to use javascript to stop page refresh.

1. Page refresh by default

When we visit a web page in the browser, the page will be automatically refreshed multiple times to ensure that all resources can be correctly load. During this process, the browser will first send a request to the server to obtain page resources. After obtaining these resources, the browser will parse and organize these resources, and finally present them to the user.

However, during this process, some resources cannot be obtained in one request, but require multiple requests. These different requests will bring different network delays and cause page refreshes. Under normal circumstances, we can reduce this refresh by setting the browser cache.

When a page is automatically refreshed multiple times, we may need to control the refresh of the page in order to proceed with the next step.

2. Use javascript to stop page refresh

When we need to stop the page from automatically refreshing, we need to use the following two javascript APIs:

location.reload( ): This method can be used to refresh the current page.

clearTimeout(): This method is used to end a timer and stop executing an operation regularly.

Based on the above API, we can try to use javascript to stop the automatic refresh of the page. The specific code is as follows:

var time_out = setTimeout(function(){
   location.reload();
},1000*10);

function stop_reload() {
   clearTimeout(time_out);
}

In this code, we use the setTimeout() method to automatically refresh the page, with a refresh interval of 10 seconds. At the same time, we declared a stop_reload() method to stop the operation of this timer.

When we call the stop_reload() method on the page, the timer will stop and the page refresh will also stop. At the same time, we can also change the refresh frequency of the page by adjusting the time interval of the timer.

3. Summary

By using the javascript API, we can easily control the automatic refresh of the page to meet our needs. However, when using these APIs, we also need to pay attention to the efficiency and readability of the code to reduce unnecessary maintenance and errors. Ultimately, we have to be clear about the fact that although JavaScript is a very powerful programming language, we cannot rely too much on it to avoid destroying the overall effect of the page.

The above is the detailed content of javascript stop refreshing. For more information, please follow other related articles on the PHP Chinese website!