javascript to camel or pascal case

camel-pascal.js

function camelPad(str){ return str
    // Look for long acronyms and filter out the last letter
    .replace(/([A-Z]+)([A-Z][a-z])/g, ' $1 $2')
    // Look for lower-case letters followed by upper-case letters
    .replace(/([a-z\d])([A-Z])/g, '$1 $2')
    // Look for lower-case letters followed by numbers
    .replace(/([a-zA-Z])(\d)/g, '$1 $2')
    .replace(/^./, function(str){ return str.toUpperCase(); })
    // Remove any white space left around the word
    .trim();
}

// remove \u00C0-\u00ff] if you do not want the extended letters like é
function toCamelCase(str) {
    var retVal = '';

    retVal = $.trim(str)
      .replace(/[^A-Za-z]/g, ' ') /* clean up non-letter characters */
      .replace(/(.)/g, function (a, l) { return l.toLowerCase(); })
      .replace(/(\s.)/g, function (a, l) { return l.toUpperCase(); })
      .replace(/[^A-Za-z\u00C0-\u00ff]/g, '');

    return retVal
}

function toPascalCase(str) {
    var retVal = '';

    retVal = $.trim(str)
      .replace(/[^A-Za-z]/g, ' ') /* clean up non-letter characters */
      .replace(/(.)/g, function (a, l) { return l.toLowerCase(); })
      .replace(/(^.|\s.)/g, function (a, l) { return l.toUpperCase(); })
      .replace(/[^A-Za-z\u00C0-\u00ff]/g, '');

    return retVal
}

function toCamelCase(s) {
    // remove all characters that should not be in a variable name
    // as well underscores an numbers from the beginning of the string
    s = s.replace(/([^a-zA-Z0-9_\- ])|^[_0-9]+/g, "").trim().toLowerCase();
    // uppercase letters preceeded by a hyphen or a space
    s = s.replace(/([ -]+)([a-zA-Z0-9])/g, function(a,b,c) {
        return c.toUpperCase();
    });
    // uppercase letters following numbers
    s = s.replace(/([0-9]+)([a-zA-Z])/g, function(a,b,c) {
        return b + c.toUpperCase();
    });
    return s;
}