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This article will explain in detail how to download javascript. The editor thinks it is very practical, so I share it for you as a reference. I hope you can get something after reading this article.

Javascript to achieve download common programs: 1, use a tag to create a link to download files-recommended; 2, use "window.open" (download file name) to jump to download; 3, use elements to create a form "submit ()" to submit download files.

Operating environment of this tutorial: windows7 system, javascript1.8.5 version, Dell G3 computer

How to use JS to download asynchronously?

That is, it can download without refreshing the page. At this point, we often think of using ajax, but because the response accepted by ajax is always a string, we cannot use ajax to implement the download function.

The common method for new downloads is

1. A label

Function commDownload1 (url, params) {url + = "?"; for (let key in params) {url + = key + "=" + params [key] + "&";} url = url.substr (0, url.length-1); $("") [0] .click ();}

2. Url Jump

Function commDownload2 (url, params) {url + = "?"; for (let key in params) {url + = key + "=" + params [key] + "&";} url = url.substr (0, url.length-1); window.open (url)

3. Submit the form

Function commDownload3 (url, method, params) {let formStr = ``; for (let [key, value] of Object.entries (params)) {formStr + =``;} formStr + = ""; $(formStr) .appendTo ("body"). Submit (). Remove ();}

Among them, the a tag experience is better, the other two will open a new tag and then download and close the new tag, the whole process is dazzling, so it is recommended to use the a tag to achieve the download function.

This is the end of the article on "how to download javascript". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, please share it for more people to see.

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