jQuery mailto param scraper

mailto.js

$('a[href^="mailto:"]').click(function(e) {
    var uri = $(this).attr('href');
    var emailRegEx = new RegExp(/\mailto:(.*?)\?/);
    var params = uri.replace(emailRegEx, '').split('&');
    var email = uri.match(emailRegEx);

    var fields = {
        email: email ? email[1] : null,
        subject: null,
        body: null
    };

    for (var i = 0; i < params.length; i ++) {
        var vals = params[i].split('=');

        fields[vals[0]] = vals[1];
    }
    
    // Ouput fields from URI
    console.log(fields);

    e.preventDefault();
});