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Architect_Programmer_Code Agriculture Network»Architect › Front-end design & web › Front-end frame › The frontend uses spark-md5 to calculate the file MD5 value
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[Other] The frontend uses spark-md5 to calculate the file MD5 value

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Posted on 4/30/2024 5:31:55 PM | | | |
Requirements: Many websites will have file upload requirements, such as uploading avatars, uploading resources, etc. In order to ensure the integrity and consistency of the file, the front-end usually calculates the MD5 value of the file and submits it to the back-end when uploading.

js to get the MD5 value of the file
https://www.itsvse.com/thread-7296-1-1.html

Hash (MD5 Verification Tool) V1.04 Installation-Free Version
https://www.itsvse.com/thread-4035-1-1.html

crypto-js calculates the sha256 value of the file
https://www.itsvse.com/thread-7293-1-1.html


SparkMD5 is a fast md5 implementation of the MD5 algorithm. The script is based on the JKM md5 library, which is the fastest algorithm. This works best for browsers because the nodejs version is probably faster.

GitHub address:The hyperlink login is visible.
Compressed version of the js package:The hyperlink login is visible.

When calculating the MD5 value of a file using the browser, by using chunk calculations,If the file is relatively large, using FileReader to load it into memory at one time will cause the browser to crash or freeze and become unresponsive。

Test a 235 MB file as shown below:




The code is as follows:





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