jquery table 全选框插件

项目中经常用到，所用弄成插件使用

/*! * copyright c by Ethan 2012-02-08 * jquery.checkAll.js 复选框全选功能 * v1.0 2012-02-08 create * usage: $('table').checkAll();*/(function($) {$.fn.checkAll = function(options) {var defaults = {checkAll:'thead :checkbox',checkboxes:'tbody :checkbox'};var params = $.extend({}, defaults, options);$(this).each(function(){var $table = $(this),$checkAll = $(params.checkAll, this),$checkboxes = $(params.checkboxes, this);$checkAll.click(function(){if( $(this).attr('checked') === 'checked' ){$checkboxes.attr('checked', true);}else{$checkboxes.attr('checked', false);}});$checkboxes.click(function(){if(  $(this).attr('checked') !== 'checked' ){$checkAll.attr('checked', false);}else if( $checkboxes.filter(':checked').size() === $checkboxes.size() ){$checkAll.attr('checked', true);}});});};})(jQuery);