How do I get the correct length of a string of emoji?

[mathmaster]

I have a text box where I only want one emoji character in it. However, the length of emojis according to App Inventor (and other programming languages too) can vary from 2 to over 25. Is there anyway I can test for the length (as seen by a human) of a string of emoji?

[Kaustubh_Rakhade]

See if this helps...

Is there a way to test if a character is an emoji?

[ai2.appinventor.mit.edu_ (2)] Yes, you can check if a character or a full string (text) if contains an emoji. Just execute this JavaScript in the invisible web-view: window.AppInventor.setWebViewString(/\p{Extended_Pictographic}/u.test('TEXT')); And then use a block called "WebViewStringChangeEvent". You should have to check conditions like this: [ai2.appinventor.mit.edu_ (3)] Source And if you want to remove emojis refer to this topic: and navigate to the section called "Filter em…

[mathmaster]

I think I got it. I can use the grapheme-splitter library in the WebView Javascript Processor, and count the number of items in the array.