How to convert Persian and Arabic numbers inside a string to English using JavaScript?

Question

How can I convert Persian/Arabic numbers to English numbers with a simple function?

arabicNumbers = [\"١\", \"٢\", \"٣\", \"٤\", \"٥\", \"٦\", \"٧\", \"٨\",          


        

Answer 1

Transforms any Persian or Arabic (or mixed) number to "English" numbers (Hindu–Arabic numerals)

var transformNumbers = (function(){
    var numerals = {
        persian : ["۰", "۱", "۲", "۳", "۴", "۵", "۶", "۷", "۸", "۹"],
        arabic  : ["٠", "١", "٢", "٣", "٤", "٥", "٦", "٧", "٨", "٩"]
    };

    function fromEnglish(str, lang){
        var i, len = str.length, result = "";

        for( i = 0; i < len; i++ )
            result += numerals[lang][str[i]]; 

        return result;
    }

    return {
        toNormal : function(str){
            var num, i, len = str.length, result = "";

            for( i = 0; i < len; i++ ){
                num = numerals["persian"].indexOf(str[i]);
                num = num != -1 ? num : numerals["arabic"].indexOf(str[i]);
                if( num == -1 ) num = str[i];
                result += num; 
            }
              
            return result;
        },

        toPersian : function(str, lang){
            return fromEnglish(str, "persian");
        },

        toArabic : function(str){
            return fromEnglish(str, "arabic");
        }
    }
})();

//////// ON INPUT EVENT //////////////

document.querySelectorAll('input')[0].addEventListener('input', onInput_Normal);
document.querySelectorAll('input')[1].addEventListener('input', onInput_Arabic);

function onInput_Arabic(){
   var _n = transformNumbers.toArabic(this.value);
   console.clear();
   console.log( _n )
}

function onInput_Normal(){
   var _n = transformNumbers.toNormal(this.value);
   console.clear();
   console.log( _n )
}

input{ width:90%; margin-bottom:1em; font-size:1.5em; padding:5px; }