Escape HTML entities, JS safe escaping, URL encoding, etc. SOme functions used on http://www.whak.ca/packer/LZMA.htm

escaping-characters-javascript.js

function esc_HTML(n) {
  return n.replace(/[&\n\r	"'<>\v\0]/g, function(n) {
    return "&#" + n.charCodeAt(0) + ";";
  });
}

function esc_URL(n) {
  return n.replace(/[^\w\d]/g, function(n) {
    return "%" + function(n, r, t) {
      return t = t || "0", n += "", n.length < r ? Array(r - n.length + 1).join(t) + n : n;
    }(n.charCodeAt(0).toString(16).toUpperCase(), 2, 0);
  });
}

function esc_JS_octal(n) {
  return n.replace(/[^\w\d]/g, function(n) {
    return "\\" + function(n, r, t) {
      return t = t || "0", n += "", n.length < r ? Array(r - n.length + 1).join(t) + n : n;
    }(n.charCodeAt(0).toString(8).toUpperCase(), 2, 0);
  });
}

function esc_JS_hex(n) {
  return n.replace(/[^\w\d]/g, function(n) {
    return "\\x" + function(n, r, t) {
      return t = t || "0", n += "", n.length < r ? Array(r - n.length + 1).join(t) + n : n;
    }(n.charCodeAt(0).toString(16).toUpperCase(), 2, 0);
  });
}

function esc_codepoint(n) {
  return n.replace(/[^]/g, function(n) {
    return "" + function(n, r, t) {
      return t = t || "0", n += "", n.length < r ? Array(r - n.length + 1).join(t) + n : n;
    }(n.charCodeAt(0), 2, 0) + " ";
  }).trim().replace(/ /g, ",");
}