Question

lets say im making a translate system, it replace all the words that is matched in the array key with the value of the matched array key lets say

translate =
  saya: "i",
  jalan: "walk",
  hutan: "forest",
  beli: "buy",
  ke: "to",
  apel: "apple",
};

string = "SaYa JaLan ke hutan beli Apel" // case insensitive

it should be

string = "I walk to forest buy apple" // the translated string

how can we do that in javascript? in a function so we can call it like

translated = translate(string) // returns the translated string

Answer 1

function translate(txt) {
    var translate = {
        saya: "i",
        jalan: "walk",
        hutan: "forest",
        beli: "buy",
        ke: "to",
        apel: "apple"
    };

    for (var key in translate) {
        txt = txt.replace(new RegExp(key, "ig"), translate[key]);
    }
    return txt.charAt(0).toUpperCase() + txt.slice(1);  //Capitalize the first
}                                                          // letter.

var translated = translate("SaYa JaLan ke hutan beli Apel");
//"I walk to forest buy apple" 

Demo: http://jsfiddle.net/DerekL/2ucEk/