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                ### 運動框架應用 - 運動框架應用 - 例子:幻燈片 - 例子:新浪微博 - 鏈式運動 - 筆記:CSS `white-space` 屬性 保留換行 ``` 值 描述 normal 默認。空白會被瀏覽器忽略。 pre 空白會被瀏覽器保留。其行為方式類似 HTML 中的 <pre> 標簽。 nowrap 文本不會換行,文本會在在同一行上繼續,直到遇到 <br> 標簽為止。 pre-wrap 保留空白符序列,但是正常地進行換行。 pre-line 合并空白符序列,但是保留換行符。 inherit 規定應該從父元素繼承 white-space 屬性的值。 ``` - 代碼: ```HTML <!DOCTYPE html> <html> <meta http-equiv="Content-Type" content="text/html;charset=UTF-8"> <title>幻燈片上下滑動和新浪微博效果</title> <link rel="stylesheet" href="../reset.css"> <link rel="stylesheet" href="./css/18.1.css"> <script src="./lib/move2.js"></script> <script> window.onload = function () { // 封裝 getElementById function get(id) { return document.getElementById(id); } // 封裝 getElementsByTagName function gets(tagName) { return document.getElementsByTagName(tagName) } // 封裝 getByClassName 方法 function getByClassName(oParent, sClass) { var aResult = new Array(); var aEle = document.getElementsByTagName('*'); for (var i in aEle) { if (aEle[i].className === sClass) { aResult.push(aEle[i]); } } return aResult; } // 左右箭頭切換圖片 // 獲取箭頭所在 ul var oDiv_position = get('div_position'); var ul_btn = getByClassName(oDiv_position[1], 'ul_btn')[0]; // 獲取 li var li_btn_left = getByClassName(ul_btn, 'slider_btn_left')[0]; var li_btn_right = getByClassName(ul_btn, 'slider_btn_right')[0]; // 獲取 img var left_icon = getByClassName(li_btn_left, 'left_icon')[0]; var right_icon = getByClassName(li_btn_right, 'right_icon')[0]; // 鼠標移入/移出 顯示/隱藏 li_btn_left.onmouseover = left_icon.onmouseover = function () { startMove(left_icon, {'opacity': 30}); } li_btn_left.onmouseout = left_icon.onmouseout = function () { startMove(left_icon, {'opacity': 0}); } li_btn_right.onmouseover = right_icon.onmouseover = function () { startMove(right_icon, {'opacity': 30}); } li_btn_right.onmouseout = right_icon.onmouseout = function () { startMove(right_icon, {'opacity': 0}); } // 獲取大圖 class li var ul_pic = getByClassName(oDiv_position[1], 'ul_pic')[0]; var oli_pic = getByClassName(ul_pic, 'li_pic'); var oImg = gets('img'); // 獲取縮略圖 class li var div_thumbnail = get('div_thumbnail'); var ul_thumbnail = getByClassName(div_thumbnail, 'ul_thumbnail')[0]; var oli_thumnali = getByClassName(ul_thumbnail, 'li_thumnali'); var pic_index = 0; var index = 0; var z = 1; // 縮略圖鼠標移入高亮,移出恢復,并注冊index 綁定大圖 for (var i in oli_thumnali) { oli_thumnali[i].index = i; oli_pic[i].index = i; // 鼠標移入 oli_thumnali[i].onmouseover = function () { startMove(this, {'opacity': 100}); } // 鼠標移出 如果是當前顯示則不執行 oli_thumnali[i].onmouseout= function () { if (oli_pic[this.index].style.zIndex != z) { startMove(this, {'opacity': 50}); } } // 點擊小圖片顯示大圖 oli_thumnali[i].onclick = function () { console.log(pic_index,parseInt(this.index)) // 如果點擊 this.index > 2 && this.index - pic_index > 0 則向右移 if (parseInt(this.index) > 2 && this.index - pic_index >0) { pic_index = parseInt(this.index); // 下一張會 ++ 先-- pic_index--; right_icon.onclick(); } // 如果 this.index > 0 && this.index - pic_index < 0 則向左移 else if (this.index > 0 && this.index - pic_index < 0) { pic_index = parseInt(this.index); // 下一張會 -- 先++ pic_index++; left_icon.onclick(); } else { pic_index = parseInt(this.index); tab(); } } // 讓第一個圖片顯示 if (oli_pic[i].style.zIndex == z) { startMove(oli_thumnali[i], {'opacity': 100}); } } // 鼠標點擊按鈕 上一張/下一張 var slide = ''; // 滑動方向 left_icon.onclick = function () { // 是否 <0 if (0 <= pic_index - 1) { // console.log('1~length-1:',pic_index) pic_index--; if (0 < pic_index && pic_index <= oli_thumnali.length - 1) { // 1~length-1 startMove(ul_thumbnail, {'marginLeft': -(pic_index-1)*li_thumbnali_width}); // 向右滑動特效 slide = 'right'; tab(); } else { // 0 slide = 'right'; tab(); } } else { // <0 重置pic_index循環播放 // console.log('0:',pic_index) pic_index = oli_thumnali.length - 1; startMove(ul_thumbnail, {'marginLeft': -(pic_index-2)*li_thumbnali_width}); tab(); } } right_icon.onclick = function () { // 判斷下一張是否大于總數 if (pic_index + 1 < oli_thumnali.length) { pic_index++; // console.log('1~oli_thumnali.length-1:',pic_index); if (2 < pic_index && pic_index <= oli_thumnali.length - 1) { startMove(ul_thumbnail, {'marginLeft': -(pic_index-2)*li_thumbnali_width}); // 向左滑動特效 slide = 'left'; tab(); } else { slide = 'left'; tab(); } } else { // 大于 oli_thumnali.length-1 跳到第一張 pic_index = 0; startMove(ul_thumbnail, {'marginLeft': pic_index*li_thumbnali_width}); tab(); } } function tab() { // 判斷是否是當前顯示圖片 if (oli_pic[pic_index].style.zIndex != z) { // 全部圖片半透明 for (var j in oli_thumnali) { startMove(oli_thumnali[j], {'opacity': 50}); } // 顯示當前點擊圖片 startMove(oli_thumnali[pic_index], {'opacity': 100}); // 顯示當前index對應大圖 oli_pic[pic_index].style.zIndex = ++z; // 顯示文字的按鈕 ul_btn.style.zIndex = ul_txt.style.zIndex = z; // 隱藏大圖 再用動畫顯示 // oImg[pic_index].style.height = 0; // oli_pic[pic_index].style.top = '-360px'; // oImg[pic_index].style.width = '0px'; // startMove(oImg[pic_index],{"width": 640, "height": 360}); if (slide === 'left') { oli_pic[pic_index].style.left = '640px'; startMove(oli_pic[pic_index],{"left": 0}); // 判斷還有沒有下一張 兩張拼接 if (pic_index-1 > 0 && pic_index+1 < oli_pic.length) startMove(oli_pic[pic_index-1],{"left": -640}); } else if (slide === 'right') { oli_pic[pic_index].style.left = '-640px'; startMove(oli_pic[pic_index],{"left": 0}); // 判斷還有沒有下一張 兩張拼接 if (pic_index+1 < oli_pic.length) { startMove(oli_pic[pic_index+1],{"left": 640}); } } else { oImg[pic_index].style.height = '0px'; startMove(oImg[pic_index],{"height": 360}); } // 顯示當前圖片介紹 introduction.innerHTML = arr[pic_index]; sum_num.innerHTML = parseInt(pic_index) + 1 + '/' + oli_thumnali.length; } } // 自動播放 oDiv_position.timer = setInterval(right_icon.onclick, 2000); oDiv_position.onmouseover = function () { clearInterval(oDiv_position.timer); } oDiv_position.onmouseout = function () { clearInterval(oDiv_position.timer); oDiv_position.timer = setInterval(right_icon.onclick, 2000); } // 設置 ul_thumbnail 的寬度 var li_thumbnali_width = oli_thumnali[0].offsetWidth; ul_thumbnail.style.width = oli_thumnali.length * oli_thumnali[0].offsetWidth + 'px'; // 設置文字說明 var arr = new Array('雪山','峽谷','懸崖','巖壁','海岸','雪覆蓋的懸崖','雪山','峽谷','懸崖','巖壁','海岸','雪覆蓋的懸崖'); // 獲取文字說明 li var ul_txt = getByClassName(oDiv_position[1], 'ul_txt')[0]; var introduction = getByClassName(ul_txt, 'introduction')[0]; var sum_num = getByClassName(ul_txt, 'sum_num')[0]; sum_num.innerHTML = pic_index + 1 + '/' + oli_thumnali.length; introduction.innerHTML = arr[pic_index]; // 新浪微博新微博效果 評論區 var div_com_show = get('div_com_show'); var text_comment = get('text_comment'); var btn_comment = get('btn_comment'); btn_comment.onclick = function () { // 1.創建子節點 2.文字添加到子節點 3.設置樣式 // 4.渲染子節點 5.設置透明度并獲取高度 6.鏈式動畫 var oLi = document.createElement('li'); oLi.innerHTML = text_comment.value; oLi.className = 'li_comment'; text_comment.value = ''; if (div_com_show.children.length > 0) { div_com_show.insertBefore(oLi, div_com_show.children[0]); } else { div_com_show.appendChild(oLi); } // var iHeight = parseInt(oLi.offsetHeight) - 20; // 多算了padding var iHeight = parseInt(getStyle(oLi, 'height')); div_com_show.children[0].style.height = '0'; startMove(oLi,{"height": iHeight}, function fn() { startMove(oLi,{"opacity":100}); }) } } </script> <body> <div id="div_center"> <div id="div_position"> <div id="div_pic"> <ul class="ul_pic"> <li class="li_pic" style="z-index:1"><img src="./images/album/1.jpeg" alt=""></li> <li class="li_pic"><img src="./images/album/2.jpeg" alt=""></li> <li class="li_pic"><img src="./images/album/3.jpeg" alt=""></li> <li class="li_pic"><img src="./images/album/4.jpeg" alt=""></li> <li class="li_pic"><img src="./images/album/5.jpeg" alt=""></li> <li class="li_pic"><img src="./images/album/6.jpeg" alt=""></li> <li class="li_pic"><img src="./images/album/2.jpeg" alt=""></li> <li class="li_pic"><img src="./images/album/5.jpeg" alt=""></li> </ul> </div> <ul class="ul_btn" style="z-index:1"> <li class="slider_btn_left"><img class="left_icon" src="./images/images/slider_btn_icon_left.png" alt=""></li> <li class="slider_btn_right"><img class="right_icon" src="./images/images/slider_btn_icon_right.png" alt=""></li> </ul> <ul class="ul_txt" style="z-index:1"> <li class="li4_background"></li> <li class="li4_introduction">圖片說明:<span class="introduction">introduction</span></li> <li class="li4_sum_num">圖片位置:<span class="sum_num"></span></li> </ul> <div id="div_thumbnail"> <ul class="ul_thumbnail"> <li class="li_thumnali"><img src="./images/album/1.jpeg" alt=""></li> <li class="li_thumnali"><img src="./images/album/2.jpeg" alt=""></li> <li class="li_thumnali"><img src="./images/album/3.jpeg" alt=""></li> <li class="li_thumnali"><img src="./images/album/4.jpeg" alt=""></li> <li class="li_thumnali"><img src="./images/album/5.jpeg" alt=""></li> <li class="li_thumnali"><img src="./images/album/6.jpeg" alt=""></li> <li class="li_thumnali"><img src="./images/album/2.jpeg" alt=""></li> <li class="li_thumnali"><img src="./images/album/5.jpeg" alt=""></li> </ul> </div> <div id="div_comments"> <div id="div_com_inp"> <textarea class="text" name="" id="text_comment" cols="60" rows="5"></textarea> <input class="btn" type="button" name="" id="btn_comment" value="發表評論"> </div> <div id="div_com_show"> </div> </div> </div> </div> </body> </html> ``` - ```css /* 18.1.css */ body { width: 100%; height: 100%; background-color: cornsilk; } li { float: left; } /* 居中 div */ #div_center { margin: 20px auto; width: 640px; height: 450px; } /* 定位 div */ #div_position { width: 640px; height: 1100px; overflow: hidden; background-color: rgb(70, 70, 70); position: absolute; } /* 大圖樣式 */ #div_pic { width: 640px; height: 360px; overflow: hidden; position: absolute; } .ul_pic { position: absolute; } .li_pic { position: absolute; } .li_pic img{ width: 640px; height: 360px; } /* 左右鍵樣式 */ .ul_btn { top: 0px; width: 640px; height: 360px; position: absolute; float: left; } .slider_btn_left, .slider_btn_right { width: 150px; height: 360px; } .slider_btn_right { float: right; } .slider_btn_left img{ padding: 150px 105px 150px 10px ; position: relative; width: 35px; height: 60px; opacity: 0; filter: alpha(opacity=0); float: left; } .slider_btn_right img{ padding: 150px 10px 150px 105px ; position: relative; width: 35px; height: 60px; opacity: 0; filter: alpha(opacity=0); float: right; } /* 小圖樣式 */ #div_thumbnail { top: 360px; width: 620px; background-color: rgb(70, 70, 70); margin: 0 10px 0 5px; overflow: hidden; position: absolute; } .ul_thumbnail { width: 640px; height: 90px; } .li_thumnali { opacity: 0.5; filter: alpha(opacity=50); } .li_thumnali img{ padding: 10px 0px 10px 10px; width: 125px; height: 70px; } /* 圖片文字欄 */ .ul_txt { width: 640px; height: 20px; position: absolute; top: 340px; } .li4_background { width: 640px; height: 20px; top: 0px; background-color: rgb(0, 0, 0); opacity: 0.5; filter: alpha(opacity=50); } .li4_introduction { top: -17px; margin-left: 10px; width: 500px; position: relative; color: rgb(255, 255, 255); filter: alpha(opacity=80); opacity: 0.8; } .li4_sum_num { width: 120px; top: -17px; left: 10px; position: relative; color: rgb(255, 255, 255); filter: alpha(opacity=80); opacity: 0.8; } /* 評論區 */ #div_comments { position: absolute; display: block; top: 450px; padding-top: 20px; width: 640px; background-color: rgb(252, 229, 200); } #div_com_inp { margin-top: 5px; border-top: burlywood dashed 1px; border-bottom: burlywood dashed 1px; } .text { margin: 20px 0 20px 53px; } .btn { margin: 20px 0 20px 20px; width: 70px; height: 70px; } #div_com_show { height: 475px; margin: 20px 50px; padding: 0px 20px; background-color: rgb(255, 255, 255); overflow: hidden; } .li_comment { white-space: pre-wrap; padding: 10px 5px; float: none; border-bottom: cadetblue dashed 1px; opacity: 0; filter: alpha(opacity=0); overflow: hidden; } ```
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