如何使用 jquery 识别键盘语言

Question

is there any way to identify the keyboard language? i have a simple textbox. that i want to check keyboard language. when the user click on textbox if the keyboard language was Contrary to Persian the user can't type anything and show the error:" change your keyboard language to persian" and when the keyboard language changed user can type.

Answer 1

I have used two different approaches for detecting English and Persian characters in my solution:

 document.getElementById('a').addEventListener('keypress',function(e){ if (isEnglish(e.charCode)) console.log('English'); else if(isPersian(e.key)) console.log('Persian'); else console.log('Others') }); function isEnglish(charCode){ return (charCode >= 97 && charCode <= 122) || (charCode>=65 && charCode<=90); } function isPersian(key){ var p = /^[\؀-\ۿ\\s]+$/; return p.test(key) && key!=' '; } 

 <input id="a" type="text"/> 

Answer 2

I don't think that's possible - anyway it's probably not what you want (Caps Lock, for example, will still output English) I'd recommend placing a keypress event listener on your textarea and checking each letter against a "Persian only" regex like this (untested):

 document.getElementById('a').addEventListener('keypress',function(e){ if (e.charCode > 160) console.log('persian'); else console.log('english'); }); 

 <input type="text" id="a"/> 

Answer 3

If you want to match ZERO WIDTH SPACE you should add this too:

\u200B

So

var p = /^[\u0600-\u06FF\u200B\s]+$/;

for more characters like ” | « | » | ?| ; | : | ... see Regex Persian Language

Answer 4

This:

function only_persian(str){
    var p = /^[\u0600-\u06FF\s]+$/;
  if (!p.test(str)) {
        alert("not format");
    }
}

or you can use this: http://imanmh.github.io/persianRex/

Answer 5

using jquery :

$("#selector").keyup(function (event) {
    var code = event.key.charCodeAt(0);
    if (isEnglish(code)) {
        alert("you typed in english");
        return;
    }
    else {
        alert("please type in english");
    }
});

function isEnglish(charCode) {
    return (charCode >= 97 && charCode <= 122)
        || (charCode >= 65 && charCode <= 90);
}