大家好，又见面了，我是你们的朋友全栈君。如果您正在找激活码,请点击查看最新教程,关注关注公众号 “全栈程序员社区” 获取激活教程,可能之前旧版本教程已经失效.最新Idea2022.1教程亲测有效,一键激活。

Jetbrains全系列IDE稳定放心使用

文章目录

JS动画实现

JS动画实现

概述

在CSS3中可以通过transition过渡属性可以实现动画
JS可以利用CSS3中的transition属性实现元素动画

匀速动画

JS封装匀速动画

在这里插入图片描述

<button id="btn">开始动画</button>
<div id="box"></div>

var btn = document.querySelector("#btn");
var box = document.querySelector("#box");

var timer = null;
var left = 0;

function animation(target, distance, time) { 
   
    var each = parseInt(distance / time * 30);
    clearInterval(timer);
    timer = setInterval(function() { 
   
        if (left >= distance) { 
   
            clearInterval(timer);
        } else { 
   
            left += each;
            target.style.left = left + "px";
        }
    }, 30);
};

btn.onclick = function() { 
   
    animation(box, 800, 2000);
};

利用CSS transition属性实现平滑动画效果

在这里插入图片描述

<button>开始动画</button>
<div id="box"></div>

<script> var btn = document.querySelector("button"); var box = document.querySelector("#box"); btn.onclick = function() { 
      box.style.transition = "all 2s linear 0s"; box.style.left = "800px"; }; </script>

缓速动画

var btn = document.querySelector("#btn");
var box = document.querySelector("#box");

var timer = null;
var left = 0;

function animation(target, distance) { 
   
    clearInterval(timer);
    timer = setInterval(function() { 
   
        if (left >= distance) { 
   
            clearInterval(timer);
        } else { 
   
            var step = (distance - left) / 10;
            step = step > 0 ? Math.ceil(step) : Math.floor(step);
            left += step;
            target.style.left = left + "px";
        }
    }, 30);
};

btn.onclick = function() { 
   
    animation(box, 800);
};

无缝连续滚动特效

在这里插入图片描述

<div id="banner" class="banner">
    <ul id="list">
        <li><img src="images/0.png" alt=""></li>
        <li><img src="images/1.png" alt=""></li>
        <li><img src="images/2.png" alt=""></li>
        <li><img src="images/3.png" alt=""></li>
        <li><img src="images/4.png" alt=""></li>
        <li><img src="images/5.png" alt=""></li>
    </ul>
</div>

* { 
   
    margin: 0;
    padding: 0;
}

.banner { 
   
    width: 1000px;
    height: 130px;
    border: 1px solid red;
    margin: 50px auto;
    overflow: hidden;
}

.banner ul { 
   
    list-style: none;
    width: 5000px;
    position: relative;
}

.banner ul li { 
   
    float: left;
    margin-right: 10px;
}

var banner = document.querySelector("#banner");
var list = document.querySelector("#list");

list.innerHTML += list.innerHTML;

var left = 0;
var timer = null;

startMove();

function startMove() { 
   
    clearInterval(timer);
    timer = setInterval(function() { 
   
        left -= 4;
        if (left <= -1260) { 
   
            left = 0;
        }
        list.style.left = left + "px";
    }, 20);
}

function stopMove() { 
   
    clearInterval(timer);
}

banner.onmouseenter = function() { 
   
    stopMove();
};

banner.onmouseleave = function() { 
   
    startMove();
};

轮播图

在这里插入图片描述

<div id="banner" class="banner">
    <ul id="list">
        <li><img src="images/0.png" alt=""></li>
        <li><img src="images/1.png" alt=""></li>
        <li><img src="images/2.png" alt=""></li>
        <li><img src="images/3.png" alt=""></li>
        <li><img src="images/4.png" alt=""></li>
        <li><img src="images/5.png" alt=""></li>
    </ul>
    <a id="leftBtn" class="left-btn" href="javascript:;">&lt;</a>
    <a id="rightBtn" class="right-btn" href="javascript:;">&gt;</a>
</div>

* { 
   
    margin: 0;
    padding: 0;
}

.banner { 
   
    width: 650px;
    height: 360px;
    border: 1px solid red;
    margin: 50px auto;
    overflow: hidden;
    position: relative;
}

.banner ul { 
   
    list-style: none;
    width: 5000px;
    height: 100%;
    position: relative;
    left: 0;
}

.banner ul li { 
   
    float: left;
}

.banner ul li img { 
   
    width: 650px;
    height: 360px;
}

.banner a { 
   
    text-decoration: none;
    color: white;
    text-align: center;
    line-height: 50px;
}

.banner .left-btn { 
   
    position: absolute;
    width: 50px;
    height: 50px;
    left: 20px;
    top: 50%;
    margin-top: -25px;
    background-color: rgba(0, 0, 0, .5);
    border-radius: 50%;
}

.banner .right-btn { 
   
    position: absolute;
    width: 50px;
    height: 50px;
    right: 20px;
    top: 50%;
    margin-top: -25px;
    background-color: rgba(0, 0, 0, .5);
    border-radius: 50%;
}

var banner = document.querySelector("#banner");
var dot = document.querySelector("#banner #dot");
var list = document.querySelector("#list");
var leftBtn = document.querySelector("#leftBtn");
var rightBtn = document.querySelector("#rightBtn");

var firstLi = list.lastElementChild.cloneNode(true);
var lastLi = list.firstElementChild.cloneNode(true);
list.insertBefore(firstLi, list.firstElementChild);
list.appendChild(lastLi);

//总长度
var length = list.childElementCount;

//当前显示第几页
var index = 1;

//节流锁
var lock = false;

function setPage(index) { 
   
    list.style.transition = "left .5s ease 0s";
    list.style.left = -index * 650 + "px";
}

setPage(index);


rightBtn.onclick = function() { 
   
    if (lock) { 
   
        return;
    }
    lock = true;

    index++;

    setPage(index);

    if (index === length - 1) { 
   
        setTimeout(function() { 
   
            index = 1;
            list.style.transition = "none";
            list.style.left = -index * 650 + "px";
        }, 500);
    }

    setTimeout(function() { 
   
        lock = false;
    }, 500);
};

leftBtn.onclick = function() { 
   
    if (lock) { 
   
        return;
    }
    lock = true;

    index--;
    setPage(index);

    if (index === 0) { 
   
        setTimeout(function() { 
   
            index = length - 2;
            list.style.transition = "none";
            list.style.left = -index * 650 + "px";
        }, 500);
    }

    setTimeout(function() { 
   
        lock = false;
    }, 500);
};

轮播图淡入淡出效果

在这里插入图片描述

<div id="banner" class="banner">
    <ul id="list">
        <li><img src="images/0.png" alt=""></li>
        <li><img src="images/1.png" alt=""></li>
        <li><img src="images/2.png" alt=""></li>
        <li><img src="images/3.png" alt=""></li>
        <li><img src="images/4.png" alt=""></li>
        <li><img src="images/5.png" alt=""></li>
    </ul>
    <a id="leftBtn" class="left-btn" href="javascript:;">&lt;</a>
    <a id="rightBtn" class="right-btn" href="javascript:;">&gt;</a>
</div>

* { 
   
    margin: 0;
    padding: 0;
}

.banner { 
   
    width: 650px;
    height: 360px;
    border: 1px solid red;
    margin: 50px auto;
    overflow: hidden;
    position: relative;
}

.banner ul { 
   
    list-style: none;
    width: 5000px;
    height: 100%;
    position: relative;
    left: 0;
}

.banner ul li { 
   
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    transition: opacity 1s ease 0s;
}

.banner ul li:first-child { 
   
    opacity: 1;
}

.banner ul li img { 
   
    width: 650px;
    height: 360px;
}

.banner a { 
   
    text-decoration: none;
    color: white;
    text-align: center;
    line-height: 50px;
}

.banner .left-btn { 
   
    position: absolute;
    width: 50px;
    height: 50px;
    left: 20px;
    top: 50%;
    margin-top: -25px;
    background-color: rgba(0, 0, 0, .5);
    border-radius: 50%;
}

.banner .right-btn { 
   
    position: absolute;
    width: 50px;
    height: 50px;
    right: 20px;
    top: 50%;
    margin-top: -25px;
    background-color: rgba(0, 0, 0, .5);
    border-radius: 50%;
}

var banner = document.querySelector("#banner");
var lis = document.querySelectorAll("#list li");
var leftBtn = document.querySelector("#leftBtn");
var rightBtn = document.querySelector("#rightBtn");

var index = 0;
var length = lis.length;
var lock = false;

rightBtn.onclick = function() { 
   
    if (lock) { 
   
        return;
    }
    lock = true;

    lis[index].style.opacity = 0;
    index++;
    if (index >= length) { 
   
        index = 0;
    }
    lis[index].style.opacity = 1;

    setTimeout(function() { 
   
        lock = false;
    }, 1000);
};
leftBtn.onclick = function() { 
   
    if (lock) { 
   
        return;
    }
    lock = true;

    lis[index].style.opacity = 0;
    index--;
    if (index < 0) { 
   
        index = length - 1;
    }
    lis[index].style.opacity = 1;

    setTimeout(function() { 
   
        lock = false;
    }, 1000);
};

发布者：全栈程序员-用户IM，转载请注明出处：https://javaforall.cn/181471.html原文链接：https://javaforall.cn

【正版授权，激活自己账号】： Jetbrains全家桶Ide使用，1年售后保障，每天仅需1毛

【官方授权正版激活】： 官方授权正版激活支持Jetbrains家族下所有IDE 使用个人JB账号...

jquery动画效果实例_动画js

文章目录

JS动画实现

概述

匀速动画

缓速动画

无缝连续滚动特效

轮播图

轮播图淡入淡出效果

发表回复

jquery动画效果实例_动画js

文章目录

JS动画实现

概述

匀速动画

缓速动画

无缝连续滚动特效

轮播图

轮播图淡入淡出效果

相关推荐

两种方法求最大公约数最小公倍数

Matlab矩阵基本操作（定义，运算）

JDK1.8关于运行时常量池, 字符串常量池的要点[通俗易懂]

mle与map_normal map

华为静态路由配置[通俗易懂]

透视投影矩阵_透视投影矩阵推导知乎

发表回复