Auto detect language and display the correct one with javascript

Question

I am making a website for my friend https://photos4humanity.herokuapp.com/ I'm thinking to pull the post from its facebook page and display it on the website so he doesnt have to duplicate content for both.

Each facebook post has both english and chinese in it. like here : https://www.facebook.com/photosforhumanity/

I would like to auto detect the language from the json file I get from facebook. Then detect which is in English and which is in Chinese then only display the right language according to internatioanlize from rails.

Is there a smart way to do this?

Ryan K · Accepted Answer · 2016-02-28 13:24:19Z

1

You could use Regex to detect if the string has any English characters or not:

isEnglish = myString.match(/[a-zA-Z]/)

or

isEnglish = myString =~ /[a-zA-Z]/

I haven't tested either of these and I don't know how your json file is organized, but this should work for a singular string.

Edit:

To pull the English characters out of the string, you can use the slice! method:

englishString = myString.slice!(/[a-zA-Z]/)

After doing that, myString should only contain non-English characters and englishString should contain only English characters.

edited Feb 28, 2016 at 13:24

answered Feb 28, 2016 at 3:58

Ryan K

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3 Comments

Rex Over a year ago

Thanks. Is there anyway to let say strip out only the english and store it somewhere, then strip out the chinese character and store that else where too? A string could have both chinese any english. "ABC 一二三"

Rex Over a year ago

Thanks. This works for my case. Just a curious question, if I have spanish and english this will not work?

Ryan K Over a year ago

For the most part, it wouldn't. It would certainly weed out the Spanish only characters, but that wouldn't be much use.

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