$.populate(form, obj) Provided a selector and object, set the corresponding form fields.

$.populate.js

/**
 * Provided a data Object, set the corresponding form fields.
 *
 * @param obj Object Your data.
 * @return Array Fields updated.
 */
$.fn.populate = function(obj) {
    var updated = [];

    for (var field in obj) {
        var changes = false;
        if (! obj.hasOwnProperty(field)) {
            continue;
        }
        /**
         * Try and set radio input fields
         */
        var value = obj[field];
        var values = $.isArray(value) ? value : [value];
        var inputs = this.find('input[type=radio][name='+field+']');
        if (inputs.length) {
            $.each(inputs, function() {
                var input = $(this);
                if (input.val() == value) {
                    input.prop('checked', true);
                } else {
                    input.prop('checked', false);
                }
                updated.push(field);
                changes = true;
            });
        }
        if (changes) {
            continue;
        }

        /**
         * Try and set checkbox input fields
         */
        inputs = this.find('input[type=checkbox][name='+field+']');
        if (inputs.length) {
            $.each(inputs, function() {
                var input = $(this);
                var inputValue = input.val();
                if ($.inArray(inputValue, values) > -1) {
                    input.prop('checked', true);
                    console.log('checked', inputValue, values);
                } else {
                    input.prop('checked', false);
                    console.log('unchecked', inputValue, values);
                }
                updated.push(field);
                changes = true;
            });
        }
        if (changes) {
            continue;
        }

        /**
         * Try and set select multiple
         */
        inputs = this.find('select[name='+field+'][multiple]');
        if (inputs.length) {
            $.each(inputs, function() {
                var input = $(this);
                var opts = input.find('option');
                $.each(opts, function() {
                    var opt = $(this);
                    var optValue = opt.val();
                    if ($.inArray(optValue, values) > -1) {
                    		console.log('selected', optValue, values);
                        opt.prop('selected', true);
                    } else {
                        console.log('unselected', optValue, values);
                        opt.prop('selected', false);
                    }
                });
                updated.push(field);
                changes = true;
            });
        }
        if (changes) {
            continue;
        }

        /**
         * Try and set select, textarea, or any other type of input fields
         */
        inputs = this.find(
            'input[name='+field+'],' +
            'textarea[name='+field+'],' +
            'select[name='+field+']'
        );
        if (inputs.length) {
            inputs.val(value);
            updated.push(field);
        }
    }

    return $.unique(updated);
};