获得正确位置的单击按钮(波纹效果) [英] Getting right position of clicked button (ripple effect)
本文介绍了获得正确位置的单击按钮(波纹效果)的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我在找到正确的点击位置时遇到问题.我想做谷歌材料设计-单击按钮上的涟漪效应.圈子需要在按钮上而不是其他地方.因此，当您单击按钮时，白色圆圈显示在通缉按钮上方的其他位置.我在哪里犯了错误?
I have problem with finding the right position of click. I want to make google material design - ripple effect on clicked button. Circle need to be on button not somewhere else. So when you click on button white circle is showing somewhere else not above the wanted button. Where is the mistake i made?
$(function () {
var btnClick, bWidth, bHeight, x, y, posX, posY,d;
$(".btn").click(function (e) {
e.preventDefault();
posX = $(this).offset().left;
posY = $(this).offset().top;
bWidth = $(this).outerWidth();
bHeight = $(this).outerHeight();
d = Math.max(bWidth, bHeight);
$(".btn-over").remove();
if ($(this).find(".btn-over").length === 0) {
$(this).prepend("<span class='btn-over'></span>");
}
// btnClick = $(this).children(".btn-over");
// btnClick.removeClass("animation");
// if (!btnClick.height() && !btnClick.width()) {
// d = Math.max($(this).outerWidth(), $(this).outerHeight());
// btnClick.css({
// height: d,
// width: d
// });
// }
x = e.pageX - posX - bWidth / 2;
y = e.pageY - posY - bHeight /2;
$(".btn-over").css({
width: d,
height: d,
top: y + 'px',
left: x + 'px'
}).addClass("animation");
});
});nav {
height: 3rem;
background-color: #424242;
color: #fff; }
.menu {
list-style: none;
float: right; }
.menu li {
display: inline-block; }
.btn-sigup {
box-shadow: none;
background-color: #4CAF50; }
.btn-sigup:hover {
background-color: #66BB6A;
box-shadow: none; }
.btn-login {
box-shadow: none;
background-color: transparent; }
.btn-login:hover {
box-shadow: none;
background-color: transparent; }
.btn-over {
display: inline-block;
position: absolute;
background: rgba(255, 255, 255, 0.3);
border-radius: 100%;
-webkit-transform: scale(0);
-moz-transform: scale(0);
-o-transform: scale(0);
transform: scale(0); }
.animation {
-webkit-animation: ripple 0.65s linear;
-moz-animation: ripple 0.65s linear;
-ms-animation: ripple 0.65s linear;
-o-animation: ripple 0.65s linear;
animation: ripple 0.65s linear; }
@-webkit-keyframes ripple {
100% {
opacity: 0;
-webkit-transform: scale(2.5); } }
@-moz-keyframes ripple {
100% {
opacity: 0;
-moz-transform: scale(2.5); } }
@-o-keyframes ripple {
100% {
opacity: 0;
-o-transform: scale(2.5); } }
@keyframes ripple {
100% {
opacity: 0;
transform: scale(2.5); } }<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script>
<header>
<nav>
<ul class="menu">
<li>
<button class="btn btn-login">LOG IN</button>
</li>
<li>
<button class="btn btn-sigup">SING UP</button>
</li>
</ul>
</nav>
</header>推荐答案
JavaScript没什么问题，您只需要将按钮的 position 设置为 relative 以便将 .btn-over span 的位置包含在其中.您还应该考虑将按钮的 overflow 设置为 hidden ，以免波纹"溢出.
There's nothing wrong with your JavaScript, you just need to set the position of the buttons to relative so that the positioning of the .btn-over span is contained within them. You should also consider setting the overflow of the buttons to hidden so that the "ripple" doesn't spill out of them.
$(function(){
var btnClick,bWidth,bHeight,x,y,posX,posY,d;
$(".btn").click(function(e){
e.preventDefault();
posX=$(this).offset().left;
posY=$(this).offset().top;
bWidth=$(this).outerWidth();
bHeight=$(this).outerHeight();
d=Math.max(bWidth,bHeight);
$(".btn-over").remove();
if($(this).find(".btn-over").length===0)
$(this).prepend("<span class=\"btn-over\"></span>");
x=e.pageX-posX-bWidth/2;
y=e.pageY-posY-bHeight/2;
$(".btn-over").css({
width:d+"px",
height:d+"px",
top:y+"px",
left:x+"px"
}).addClass("animation");
});
});nav{
background-color:#424242;
color:#fff;
height:3rem;
}
.menu{
float:right;
list-style:none;
}
.menu li{
display:inline-block;
}
.btn-sigup{
background-color:#4CAF50;
overflow:hidden;
position:relative;
}
.btn-sigup:hover{
background-color:#66BB6A;
}
.btn-login{
background-color:transparent;
overflow:hidden;
position:relative;
}
.btn-over{
background:rgba(255, 255, 255, 0.3);
border-radius:50%;
display:inline-block;
position:absolute;
transform:scale(0);
}
.animation{
animation:ripple .65s linear;
}
@keyframes ripple{
to{
opacity:0;
transform:scale(2.5);
}
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<header>
<nav>
<ul class="menu">
<li>
<button class="btn btn-login">LOG IN</button>
</li>
<li>
<button class="btn btn-sigup">SING UP</button>
</li>
</ul>
</nav>
</header>这是具有其他功能的替代实现，可以在所需的任何元素上使用.要实现它，您需要从CSS复制JavaSript和重要内容，然后将要应用此效果的任何元素提供给 data-ripple-color 属性，该属性需要任何有效的 CSS颜色的值.
And here' an alternative implementation, with some extra features, that you can use on any element you wish. To implement it, you'll need to copy the JavaSript and the important stuff from the CSS and then you just give any element you want to apply this effect to a data-ripple-color attribute, which takes a value of any valid CSS color.
要在每次单击元素时将此效果应用到元素，而无需等待上一个动画完成，请为其添加一个 data-ripple-multiple 属性，该属性的值为 true .有关示例，请参见下面的按钮元素.
To apply this effect to an element every time it is clicked without waiting for the previous animation to complete add a data-ripple-multiple attribute to it with a value of true. See the button element below for an example.
(function(){
if(document.querySelector("[data-ripple-color]")){
var span=document.createElement("span");
span.classList.add("ripple");
document.addEventListener("click",function(event){
var target=event.target,color,data,multi,node,style;
while(!target.dataset.rippleColor&&target!==document.body)
target=target.parentNode;
data=target.dataset;
multi=data.rippleMultiple;
if((color=data.rippleColor)&&(multi||!data.rippleWait)){
if(!multi)data.rippleWait="true";
target.appendChild(node=span.cloneNode(0));
style=node.style;
style.background=color;
style.height=style.width=Math.min(target.offsetHeight,target.offsetWidth)+"px";
style.left=event.pageX-target.offsetLeft+"px";
style.top=event.pageY-target.offsetTop+"px";
setTimeout(function(){
target.removeChild(node);
if(!multi)delete data.rippleWait;
},750);
}
},0);
}
})();/* Housekeeping */@import url(https://fonts.googleapis.com/css?family=Roboto:400,300,500,700,900);*,*::before,*::after{-moz-appearance:none;-webkit-appearance:none;appearance:none;background:none;background-clip:padding-box;border:0;border-radius:0;box-sizing:border-box;color:rgba(0,0,0,.87);font-family:Roboto,arial,sans-serif;font-size:14px;-webkit-font-smoothing:antialiased;font-style:normal;font-weight:500;line-height:1.2em;list-style:none;margin:0;outline:0;padding:0;-webkit-tap-highlight-color:rgba(0,0,0,0);text-align:left;text-decoration:none;text-indent:0;text-rendering:auto;transition-duration:.2s;transition-property:none;transition-timing-function:cubic-bezier(.4,0,.2,1);}*>*{font-size:inherit;font-style:inherit;font-weight:inherit;}*>*,*::before,*::after{color:inherit;font-family:inherit;line-height:inherit;}
/* The important stuff */
[data-ripple-color]{
overflow:hidden;
position:relative;
}
.ripple{
animation:ripple 1s cubic-bezier(.4,0,.2,1);
border-radius:50%;
display:block;
opacity:0;
position:absolute;
}
@keyframes ripple{
from{
transform:translate(-50%,-50%) scale(1);
opacity:.54;
}to{
transform:translate(-50%,-50%) scale(54);
opacity:0;
}
}
/* Fiddle styles */
a[data-ripple-color],button[data-ripple-color]{
border-radius:3px;
cursor:pointer;
display:block;
font-size:24px;
font-weight:500;
line-height:40px;
margin:0 auto 8px;
padding:8px;
text-align:center;
width:200px;
}
a[data-ripple-color]{
background:#F44336;
color:#fff;
}
button[data-ripple-color]{
background:#3f51b5;
color:#fff;
font-size:24px;
line-height:40px;
padding:8px;
text-align:center;
text-transform:uppercase;
width:200px;
}
figure[data-ripple-color]{
border-radius:3px;
margin:0 auto 8px;
width:200px;
}
p[data-ripple-color]{
line-height:20px;
margin:0 8px 8px;
padding:8px;
}<button data-ripple-color="#fff" data-ripple-multiple="true">Button</button>
<a data-ripple-color="#303f9f">Link</a>
<figure data-ripple-color="rgb(0,0,0)"><img src="http://placehold.it/200x200.png/e0e0e0?text=Image+%0A+Parent"></figure>
<p data-ripple-color="#616161">Paragrpah</p>这篇关于获得正确位置的单击按钮(波纹效果)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IT屋！
查看全文
