您好,登錄后才能下訂單哦!
這篇文章主要介紹js如何實(shí)現(xiàn)水平和豎直滑動(dòng)條,文中介紹的非常詳細(xì),具有一定的參考價(jià)值,感興趣的小伙伴們一定要看完!
首先來看水平滑動(dòng)條,效果圖如下:
代碼如下:
<html> <head> <meta charset="UTF-8"> <title>水平滑動(dòng)條</title> <style> * { margin: 0; padding: 0; } .scroll { margin: 100px; width: 500px; height: 5px; background: #ccc; position: relative; } .bar { width: 10px; height: 20px; background: #369; position: absolute; top: -7px; left: 0; cursor: pointer; } p{ margin-left: 100px; } </style> </head> <body> <div class="scroll" id="scroll"> <div class="bar" id="bar"> </div> </div> <p></p> <script> //獲取元素 var scroll = document.getElementById('scroll'); var bar = document.getElementById('bar'); var ptxt = document.getElementsByTagName('p')[0]; bar.onmousedown = function(event) { var event = event || window.event; //頁面事件的X減去當(dāng)前相對于最近的祖先定位元素 var x = event.clientX - this.offsetLeft; document.onmousemove = function(event) { var event = event || window.event; var left = event.clientX - x; if (left < 0) left = 0; else if (left > scroll.offsetWidth - bar.offsetWidth) { left = scroll.offsetWidth - bar.offsetWidth; } //改變滑塊的left bar.style.left = left + "px"; ptxt.innerHTML = "當(dāng)前滑塊的移動(dòng)的百分比:" + parseInt(left / (scroll.offsetWidth - bar.offsetWidth) * 100) + "%"; //防止選擇內(nèi)容 window.getSelection ? window.getSelection().removeAllRanges() : document.selection.empty(); } } //當(dāng)鼠標(biāo)彈起的時(shí)候,不做任何操作 document.onmouseup = function() { document.onmousemove = null; } </script> </body> </html>
豎直滑動(dòng)條效果圖如下:
代碼如下:
<html> <head> <meta charset="UTF-8"> <title>豎直滑動(dòng)條</title> <style> * { margin: 0; padding: 0; } .scroll{ margin: 100px; width: 5px; height: 320px; background: #ccc; position: relative; } .bar { width: 15px; height: 5px; background: #369; position: absolute; top: 0px; left: -5; cursor: pointer; } p{ margin-left: 100px; } </style> </head> <body> <div class="scroll" id="scroll"> <div class="bar" id="bar"> </div> </div> <p></p> <script> //獲取元素 var scroll = document.getElementById("scroll"); var bar = document.getElementById("bar"); var ptxt = document.getElementsByTagName('p')[0]; //添加事件 bar.onmousedown = function(event) { var event = event || window.event; //頁面事件的Y減去當(dāng)前相對于最近的祖先定位元素 var y = event.clientY - this.offsetTop; // 拖動(dòng)需要寫到down里面 document.onmousemove = function(event) { var event = event || window.event; //獲取移動(dòng)的距離 var top = event.clientY - y; if (top < 0){ top = 0; } else if (top > scroll.offsetHeight - bar.offsetHeight){ top = scroll.offsetHeight - bar.offsetHeight; } //改變滑塊的top bar.style.top = top + "px"; //按照百分比得到當(dāng)前滑動(dòng)的距離 ptxt.innerHTML = "當(dāng)前滑塊的移動(dòng)的百分比:" + parseInt(top/(scroll.offsetHeight - bar.offsetHeight) * 100) + "%"; //防止選擇內(nèi)容 window.getSelection ? window.getSelection().removeAllRanges() : document.selection.empty(); } } //當(dāng)鼠標(biāo)彈起的時(shí)候,不做任何操作 document.onmouseup = function() { document.onmousemove = null; } </script> </body> </html>
這里之所以加入移動(dòng)百分比的展示效果,主要是考慮到后續(xù)如果需要對接后臺的數(shù)據(jù)就可以達(dá)到動(dòng)態(tài)控制的目的。
以上是“js如何實(shí)現(xiàn)水平和豎直滑動(dòng)條”這篇文章的所有內(nèi)容,感謝各位的閱讀!希望分享的內(nèi)容對大家有幫助,更多相關(guān)知識,歡迎關(guān)注億速云行業(yè)資訊頻道!
免責(zé)聲明:本站發(fā)布的內(nèi)容(圖片、視頻和文字)以原創(chuàng)、轉(zhuǎn)載和分享為主,文章觀點(diǎn)不代表本網(wǎng)站立場,如果涉及侵權(quán)請聯(lián)系站長郵箱:is@yisu.com進(jìn)行舉報(bào),并提供相關(guān)證據(jù),一經(jīng)查實(shí),將立刻刪除涉嫌侵權(quán)內(nèi)容。