Convert Persian Numbers to Latin Numbers

gistfile1.js

/*
    tabdil('۲۰۲۷۰۱-۱-۳۸۱-۹۴۳۸۲') => "202701138194382"
*/

var tabdil=function(m){
    var num=JSON.parse('{"۰":"0","۱":"1","۲":"2","۳":"3","۴":"4","۵":"5","۶":"6","۷":"7","۸":"8","۹":"9"}');
    return m.replace(/./g,function(c){
	return (typeof num[c]==="undefined")?
		((/\d+/.test(c))?c:''):
		num[c];
    })
}

version2.js

function num(s){
    var a=["٠", "١", "٢", "٣", "٤", "٥", "٦", "٧", "٨", "٩"]
    var p=["۰", "۱", "۲", "۳", "۴", "۵", "۶", "۷", "۸", "۹"]
    for(var i=0;i<10;i++){
        s=s.replace(new RegExp(a[i],'g'),i)
            .replace(new RegExp(p[i],'g'),i)
    }
    return s;
}

yes it works, it seems that a denotes to Arabic and p denotes to Persian digits