回答編集履歴
2
再修正
test
CHANGED
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@@ -8,6 +8,10 @@
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可読性と保守性を向上してみました。
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まとめられる処理はまとめるようにし、変数名や関数名をわかりやすくしましょう。
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バグが発見しやすくなり、後々の修正が楽になりますよ。
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```JavaScript
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$(function() {
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@@ -22,9 +26,9 @@
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var opacity_transparent = 0;
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var item_p
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var item_wrapper = ".slide";
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var all_items = item_p
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var all_items = item_wrapper + " > .item";
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//変数を定義
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function append_item_to_wrapper(item_index) {
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$(item_html[item_index]).appendTo(item_wrapper).css("opacity", opacity_transparent);
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}
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//
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//指定の番号のアイテムを出力する
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function show_indexed_item(index) {
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current_item_index = index * 1;
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$(all_items).animate({
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"opacity" : opacity_transparent
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}, animated_duration, function() {
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$(this).remove();
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});
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paging_current();
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append_item_to_wrapper(current_item_index);
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$(all_items).animate({
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"opacity" : opacity_opaque
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}, animated_duration, function() {
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set_wrapper_as_high_as($(this));
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});
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}
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//次のアイテムをスライドさせる
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function s
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function slide_item(is_previous) {
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current_item_index += (is_previous ? -1 : 1);
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if (n
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if (current_item_index < 0) {
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current_item_index = last_item_index;
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} else if (n
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} else if (current_item_index > last_item_index) {
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current_item_index = 0;
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}
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$(all_items).animate({
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"left" : sliding_gap * (is_previous ? 1 : -1) + "px",
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"opacity" : opacity_transparent
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}, animated_duration, function() {
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$(this).remove();
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});
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paging_current();
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$(item_html[next_item_index])
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.appendTo(item_parent).addClass(is_previous ? "previous" : "next").css("opacity", opacity_transparent);
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append_item_to_wrapper(current_item_index);
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$(all_items).animate({
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"left" : "0",
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"opacity" : opacity_opaque
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}, animated_duration, function() {
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set_wrapper_as_high_as($(this));
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});
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};
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//親要素を子要素と同じ高さにする
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function set_wrapper_as_high_as(child) {
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var height = child.outerHeight();
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child.parent().css('height', height);
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};
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//ページングの現在位置を設定する
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function paging_current() {
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$("." + slide_paging + " > li").removeClass("current");
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$("." + slide_paging + " > li." + slide_paging + "_" + current_item_index).addClass("current");
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}
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//初期化
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$(document).ready(function() {
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//左右ボタンをHTMLで直接記述
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//ページングを追加
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// $(item_wrapper).append("<ul class='" + slide_paging + "'></ul>");
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//html要素を取得・配列化
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$(all_items).each(function(index) {
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item_html[index] = '<div class="item">' + $(this).html() + '</div>';
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//
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//ページングの番号もこのときに生成
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$("." + slide_paging).append("<li class='" + slide_paging + "_" + index + "'>" + "</li>");
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last_item_index++;
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//ついでに各要素の高さを取得し、最大値をmax_heightに代入
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max_height = Math.max(max_height, $(this).innerHeight());
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});
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});
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//ページングの現在位置を設定する
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});
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paging_current();
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};
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var set_parent_as_high_as = function(child) {
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child.parent().css('height', height);
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};
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//ページングの現在位置を設定する
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function paging_current() {
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$("." + slide_paging + " > li").removeClass("current");
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$("." + slide_paging + " > li." + slide_paging + "_" + current_item_index).addClass("current");
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}
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//初期化
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$(document).ready(function() {
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//左右ボタンをHTMLで直接記述
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//ページングを追加
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// $(item_parent).append("<ul class='" + slide_paging + "'></ul>");
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//html要素を取得・配列化
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$(all_items).each(function(i) {
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item_html[i] = $(this).html();
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item_html[i] = '<div class="item">' + item_html[i] + '</div>';
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$("." + slide_paging).append("<li class='" + slide_paging + "_" + i + "'>" + "</li>");
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//ついでに各要素の高さを取得し、最大値をmax_heightに代入
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var this_height = $(this).innerHeight();
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if (max_height < this_height) {
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max_height = this_height;
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set_wrapper_as_high_as($(all_items + ":first"));
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//スライドの1つ目以外を消去
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$(all_items).not(":first").remove();
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//クリックイベント
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$(".slide_navi > .next").click(function() {
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slide_item(false);
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});
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$(".slide_navi > .previous").click(function() {
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slide_item(true);
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});
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$("." + slide_paging + " li").click(function() {
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slide_paging_click = $(this).attr("class").match(/[0-9+]/);
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slide_paging_click = String(slide_paging_click[0]);
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if (slide_paging_click != current_item_index) {
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show_indexed_item(slide_paging_click);
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}
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});
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//ページングの現在位置を設定する
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paging_current();
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set_parent_as_high_as($(all_items + ":first"));
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//スライドの1つ目以外を消去
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$(all_items).not(":first").remove();
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//クリックイベント
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$(".slide_navi > .next").click(function() {
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slide_item(true);
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$("." + slide_paging + " li").click(function() {
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slide_paging_click = String(slide_paging_click[0]);
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if (slide_paging_click != current_item_index) {
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バグ修正、可読性と保守性を向上
test
CHANGED
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@@ -2,80 +2,276 @@
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修正
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可読性と保守性を向上してみました。
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```JavaScript
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chi
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$(function() {
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15
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//定数を定義
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var animated_duration = 500; // milliseconds
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19
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var sliding_gap = 30; // px
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21
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var opacity_opaque = 1;
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22
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var opacity_transparent = 0;
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var item_parent = ".slide";
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+
var all_items = item_parent + " > .item";
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28
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+
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29
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+
//変数を定義
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30
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+
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31
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+
var last_item_index = -1;
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32
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+
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33
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+
var item_html = [];
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34
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+
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35
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+
var current_item_index = 0, max_height = 0;
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36
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+
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37
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+
//ページング関連の変数
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38
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+
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39
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+
var slide_paging = "slide_paging";
|
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40
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41
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+
var slide_paging_click;
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42
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45
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+
//次のアイテムを出力する
|
|
46
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|
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47
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+
function show_item(is_previous) {
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48
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+
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49
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var next_item_index = current_item_index + (is_previous ? -1 : 1);
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50
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52
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53
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if (next_item_index < 0) {
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next_item_index = last_item_index;
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57
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} else if (next_item_index > last_item_index) {
|
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58
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59
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next_item_index = 0;
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60
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}
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62
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63
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64
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65
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paging_current();
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66
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67
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68
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69
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+
$(item_html[next_item_index])
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70
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+
|
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71
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+
.appendTo(item_parent).addClass(is_previous ? "previous" : "next").css("opacity", opacity_transparent);
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72
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+
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73
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+
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74
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+
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75
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+
current_item_index = next_item_index;
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|
76
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+
|
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77
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+
}
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|
78
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+
|
|
79
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+
|
|
80
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+
|
|
81
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+
//指定の番号のアイテムを出力する
|
|
82
|
+
|
|
83
|
+
function show_indexed_item(index) {
|
|
84
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+
|
|
85
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+
current_item_index = index * 1;
|
|
86
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+
|
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87
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+
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88
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+
|
|
89
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+
$(all_items).animate({
|
|
90
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+
|
|
91
|
+
"opacity" : opacity_transparent
|
|
92
|
+
|
|
93
|
+
}, animated_duration, function() {
|
|
94
|
+
|
|
95
|
+
$(this).remove();
|
|
96
|
+
|
|
97
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+
});
|
|
98
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+
|
|
99
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+
|
|
100
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+
|
|
101
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+
$(item_html[current_item_index])
|
|
102
|
+
|
|
103
|
+
.appendTo(item_parent).css("opacity", opacity_transparent);
|
|
104
|
+
|
|
105
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+
|
|
106
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+
|
|
107
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+
$(all_items).animate({
|
|
108
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+
|
|
109
|
+
"opacity" : opacity_opaque
|
|
110
|
+
|
|
111
|
+
});
|
|
112
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+
|
|
113
|
+
paging_current();
|
|
114
|
+
|
|
115
|
+
}
|
|
116
|
+
|
|
117
|
+
|
|
118
|
+
|
|
119
|
+
//アイテムをスライドさせる
|
|
120
|
+
|
|
121
|
+
function slide_item(is_previous) {
|
|
122
|
+
|
|
123
|
+
$(all_items).animate({
|
|
124
|
+
|
|
125
|
+
"left" : sliding_gap * (is_previous ? 1 : -1) + "px",
|
|
126
|
+
|
|
127
|
+
"opacity" : opacity_transparent
|
|
128
|
+
|
|
129
|
+
}, animated_duration, function() {
|
|
130
|
+
|
|
131
|
+
$(this).remove();
|
|
132
|
+
|
|
133
|
+
});
|
|
134
|
+
|
|
135
|
+
|
|
136
|
+
|
|
137
|
+
show_item(is_previous);
|
|
138
|
+
|
|
139
|
+
|
|
140
|
+
|
|
141
|
+
$(all_items + (is_previous ? ".previous" : ".next")).animate({
|
|
142
|
+
|
|
143
|
+
"left" : "0",
|
|
144
|
+
|
|
145
|
+
"opacity" : opacity_opaque
|
|
146
|
+
|
|
147
|
+
}, animated_duration, function() {
|
|
148
|
+
|
|
149
|
+
set_parent_as_high_as($(this));
|
|
150
|
+
|
|
151
|
+
});
|
|
152
|
+
|
|
153
|
+
};
|
|
154
|
+
|
|
155
|
+
|
|
156
|
+
|
|
157
|
+
//親要素を子要素と同じ高さにする
|
|
158
|
+
|
|
159
|
+
var set_parent_as_high_as = function(child) {
|
|
160
|
+
|
|
161
|
+
var height = child.outerHeight();
|
|
162
|
+
|
|
163
|
+
child.parent().css('height', height);
|
|
164
|
+
|
|
165
|
+
};
|
|
166
|
+
|
|
167
|
+
|
|
168
|
+
|
|
169
|
+
//ページングの現在位置を設定する
|
|
170
|
+
|
|
171
|
+
function paging_current() {
|
|
172
|
+
|
|
173
|
+
$("." + slide_paging + " > li").removeClass("current");
|
|
174
|
+
|
|
175
|
+
$("." + slide_paging + " > li." + slide_paging + "_" + current_item_index).addClass("current");
|
|
176
|
+
|
|
177
|
+
}
|
|
178
|
+
|
|
179
|
+
|
|
180
|
+
|
|
181
|
+
//初期化
|
|
182
|
+
|
|
183
|
+
$(document).ready(function() {
|
|
184
|
+
|
|
185
|
+
//左右ボタンをHTMLで直接記述
|
|
186
|
+
|
|
187
|
+
//ページングを追加
|
|
188
|
+
|
|
189
|
+
// $(item_parent).append("<ul class='" + slide_paging + "'></ul>");
|
|
190
|
+
|
|
191
|
+
|
|
192
|
+
|
|
193
|
+
//html要素を取得・配列化
|
|
194
|
+
|
|
195
|
+
$(all_items).each(function(i) {
|
|
196
|
+
|
|
197
|
+
item_html[i] = $(this).html();
|
|
198
|
+
|
|
199
|
+
item_html[i] = '<div class="item">' + item_html[i] + '</div>';
|
|
200
|
+
|
|
201
|
+
|
|
202
|
+
|
|
203
|
+
//ページングの番号もこのときに生成
|
|
204
|
+
|
|
205
|
+
|
|
206
|
+
|
|
207
|
+
$("." + slide_paging).append("<li class='" + slide_paging + "_" + i + "'>" + "</li>");
|
|
208
|
+
|
|
209
|
+
last_item_index++;
|
|
210
|
+
|
|
211
|
+
|
|
212
|
+
|
|
213
|
+
//ついでに各要素の高さを取得し、最大値をmax_heightに代入
|
|
214
|
+
|
|
215
|
+
var this_height = $(this).innerHeight();
|
|
216
|
+
|
|
217
|
+
if (max_height < this_height) {
|
|
218
|
+
|
|
219
|
+
max_height = this_height;
|
|
220
|
+
|
|
221
|
+
}
|
|
222
|
+
|
|
223
|
+
});
|
|
224
|
+
|
|
225
|
+
|
|
226
|
+
|
|
227
|
+
//ページングの現在位置を設定する
|
|
228
|
+
|
|
229
|
+
paging_current();
|
|
230
|
+
|
|
231
|
+
set_parent_as_high_as($(all_items + ":first"));
|
|
232
|
+
|
|
233
|
+
|
|
234
|
+
|
|
235
|
+
//スライドの1つ目以外を消去
|
|
236
|
+
|
|
237
|
+
$(all_items).not(":first").remove();
|
|
238
|
+
|
|
239
|
+
|
|
240
|
+
|
|
241
|
+
//クリックイベント
|
|
242
|
+
|
|
243
|
+
$(".slide_navi > .next").click(function() {
|
|
244
|
+
|
|
245
|
+
slide_item(false);
|
|
246
|
+
|
|
247
|
+
});
|
|
248
|
+
|
|
249
|
+
|
|
250
|
+
|
|
251
|
+
$(".slide_navi > .previous").click(function() {
|
|
252
|
+
|
|
253
|
+
slide_item(true);
|
|
254
|
+
|
|
255
|
+
});
|
|
256
|
+
|
|
257
|
+
|
|
258
|
+
|
|
259
|
+
$("." + slide_paging + " li").click(function() {
|
|
260
|
+
|
|
261
|
+
slide_paging_click = $(this).attr("class").match(/[0-9+]/);
|
|
262
|
+
|
|
263
|
+
slide_paging_click = String(slide_paging_click[0]);
|
|
264
|
+
|
|
265
|
+
if (slide_paging_click != current_item_index) {
|
|
266
|
+
|
|
267
|
+
show_indexed_item(slide_paging_click);
|
|
268
|
+
|
|
269
|
+
}
|
|
270
|
+
|
|
271
|
+
});
|
|
272
|
+
|
|
273
|
+
});
|
|
274
|
+
|
|
275
|
+
});
|
|
80
276
|
|
|
81
277
|
```
|