问题描述

我想单击一个 div 并旋转另一个 div，然后当再次单击第一个 div 时，另一个 div 会旋转回原来的位置.

I want to click on one div and rotate another div then when the firsts div is clicked again the other div rotates back to its original position.

如果需要，我可以参考这个库http://ricostacruz.com/jquery.transit.

I can reference this library if required http://ricostacruz.com/jquery.transit.

推荐答案

要旋转 DIV，我们可以添加一些 CSS，使用 CSS transform rotate 旋转 DIV.

To rotate a DIV we can add some CSS that, well, rotates the DIV using CSS transform rotate.

要切换旋转，我们可以保留一个标志，一个带有布尔值的简单变量，告诉我们旋转的方式.

To toggle the rotation we can keep a flag, a simple variable with a boolean value that tells us what way to rotate.

var rotated = false;

document.getElementById('button').onclick = function() {
    var div = document.getElementById('div'),
        deg = rotated ? 0 : 66;

    div.style.webkitTransform = 'rotate('+deg+'deg)'; 
    div.style.mozTransform    = 'rotate('+deg+'deg)'; 
    div.style.msTransform     = 'rotate('+deg+'deg)'; 
    div.style.oTransform      = 'rotate('+deg+'deg)'; 
    div.style.transform       = 'rotate('+deg+'deg)'; 

    rotated = !rotated;
}

var rotated = false;

document.getElementById('button').onclick = function() {
    var div = document.getElementById('div'),
        deg = rotated ? 0 : 66;

    div.style.webkitTransform = 'rotate('+deg+'deg)'; 
    div.style.mozTransform    = 'rotate('+deg+'deg)'; 
    div.style.msTransform     = 'rotate('+deg+'deg)'; 
    div.style.oTransform      = 'rotate('+deg+'deg)'; 
    div.style.transform       = 'rotate('+deg+'deg)'; 
    
    rotated = !rotated;
}

#div {
    position:relative; 
    height: 200px; 
    width: 200px; 
    margin: 30px;
    background: red;
}

<button id="button">rotate</button>
<br /><br />
<div id="div"></div>

要为旋转添加一些动画，我们所要做的就是添加 CSS 过渡

To add some animation to the rotation all we have to do is add CSS transitions

div {
    -webkit-transition: all 0.5s ease-in-out;
    -moz-transition: all 0.5s ease-in-out;
    -o-transition: all 0.5s ease-in-out;
    transition: all 0.5s ease-in-out;
}

var rotated = false;

document.getElementById('button').onclick = function() {
    var div = document.getElementById('div'),
        deg = rotated ? 0 : 66;

    div.style.webkitTransform = 'rotate('+deg+'deg)'; 
    div.style.mozTransform    = 'rotate('+deg+'deg)'; 
    div.style.msTransform     = 'rotate('+deg+'deg)'; 
    div.style.oTransform      = 'rotate('+deg+'deg)'; 
    div.style.transform       = 'rotate('+deg+'deg)'; 
    
    rotated = !rotated;
}

#div {
    position:relative; 
    height: 200px; 
    width: 200px; 
    margin: 30px;
    background: red;
    -webkit-transition: all 0.5s ease-in-out;
    -moz-transition: all 0.5s ease-in-out;
    -o-transition: all 0.5s ease-in-out;
    transition: all 0.5s ease-in-out;
}

<button id="button">rotate</button>
<br /><br />
<div id="div"></div>

另一种方法是使用类，并在样式表中设置所有样式，从而将它们排除在 javascript 之外

Another way to do it is using classes, and setting all the styles in a stylesheet, thus keeping them out of the javascript

document.getElementById('button').onclick = function() {
    document.getElementById('div').classList.toggle('rotated');
}

document.getElementById('button').onclick = function() {
    document.getElementById('div').classList.toggle('rotated');
}

#div {
    position:relative; 
    height: 200px; 
    width: 200px; 
    margin: 30px;
    background: red;
    -webkit-transition: all 0.5s ease-in-out;
    -moz-transition: all 0.5s ease-in-out;
    -o-transition: all 0.5s ease-in-out;
    transition: all 0.5s ease-in-out;
}

#div.rotated {
    -webkit-transform : rotate(66deg); 
    -moz-transform : rotate(66deg); 
    -ms-transform : rotate(66deg); 
    -o-transform : rotate(66deg); 
    transform : rotate(66deg); 
}

<button id="button">rotate</button>
<br /><br />
<div id="div"></div>

这篇关于使用 javascript 旋转 div的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持编程学习网！