"javascript function to convert utf8 string between fullwidth and halfwidth forms" Code Answer

try this

function toascii(chars) {
    var ascii = '';
    for(var i=0, l=chars.length; i<l; i++) {
        var c = chars[i].charcodeat(0);

        // make sure we only convert half-full width char
        if (c >= 0xff00 && c <= 0xffef) {
           c = 0xff & (c + 0x20);
        }

        ascii += string.fromcharcode(c);
    }

    return ascii;
}

// example
toascii("ａｂｃ"); // returns 'abc' 0x41

By iGatiTech on May 17 2022