Быстрая и простая фильтрация элементов на странице с помощью jQuery
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function show_only_proper_items() { var $items_all = $('.item'); var select_value = $('#select').val(); var $items_filtered_by_select_value = $items_all.filter('[data-for-select="'+select_value+'"]'); var filter_text = $('#text').val(); if (filter_text == '') { var $items_filtered_by_text = $items_filtered_by_select_value; } else { var $items_filtered_by_name = $items_filtered_by_select_value.filter('[data-item-name*="'+filter_text+'"]'); var $items_filtered_by_description = $items_filtered_by_select_value.filter('[data-item-description*="'+filter_text+'"]'); var $items_filtered_by_text = $items_filtered_by_name.add($items_filtered_by_description); } var $items_to_show = $items_filtered_by_text; var $items_to_hide = $items_all.not($items_to_show); $items_to_hide.hide(); $items_to_show.show(); } |
Вот такой простой и понятный код.
Работает быстро, потому что мы работали с DOM’ом только в самом начале и в конце. Плюс мы применяем фильтры к всё более и более маленькой выборке.
Не мелькает, потому что мы прячем только лишние элементы. Но в то же время мы не сначала показываем нужные, потом скрываем ненужные — чтобы это занимало меньше памяти и страница не разрасталась, пусть даже в моменте.
Применять этот метод можно например вот так:
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jQuery(function($) { $('#select').on('change', show_only_proper_items); $('#text').on('input', show_only_proper_items); show_only_proper_items(); }); |
Пожалуйста!
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