Question

You can use array for replacement:

var array = {"from1":"to1", "from2":"to2"}

for (var val in array)
    text = text.replace(array, array[val]);

But what if you need to replace globally, ie
text = text.replace(/from/g, “to”);

Array is pretty big, so script will take a lot of space if I write “text = text.replace(…)” for every variable.

How can you use array in that case?
“/from1/g”:”to1″ does not working.

Answer 1

var array = {"from1":"to1", "from2":"to2"}

for (var val in array)
    text = text.replace(new RegExp(val, "g"), array[val]);

Edit: As Andy said, you may have to escape the special characters using a script like this one.