is there any builtin javascript string hash function in newest browsers?

Question

Everytime a new versions of browsers show up I hear about new stuff being added, like say webGL and other technologies that no one really knows if they catch up.

But I wonder if someone ever thought about such basic stuff in JS like hashing functions (MD5,SHA1 and the like).

By newest browsers I mean today's development versions too like Opera 12, Chrome 17 or Firefox 10.

Looking now for solution I found this comment on another thread here: https://stackoverflow.com/questions/7204097/short-hashing-function-for-javascript (Do you know that javascript objects already are hashtables ?). So what are these 'hashtables' ? Does it mean that I can make any string into a hash, but not an established one like md5 or sha1 but some JS build in specific ?

basically what I need to do is:

var txt="Hello world!"; var hash = txt.toSha1(); 

Answer 1

For anybody still looking for this information. There is a WebCrypto API which appears to have been finalised at the beginning of 2017.

To use it in a browser, you can find it at window.crypto.subtle which contains methods for encryption, digests etc. Documentation on the available functions here.