jquery-repeater 介绍
jQuery 重复表单字段。保证表单字段的 name 及 ID 递增。
示例：
//All options are optional.
new Repeater($('.repeatable'), {
addSelector: '.repeater-add', //The css selector for the add button.
removeSelector: '.repeater-remove', //The css selector for the remove button.
withDataAndEvents: false, //Should data and events on repeatable sections be cloned?
deepWithDataAndEvents: false, //Should data and events of repeatable sections descendants be cloned?
addCallback: function(){}, //A callback function that generated repeatable sections will be passed into.
wrapperHtml: "<div class='repeater-wrap'></div>" //HTML for an element to wrap all repeatable sections in.
});