我找到合适的点击位置有问题。我想制作谷歌材料设计 - 点击按钮的涟漪效果。圆圈需要在按钮上而不是其他地方。因此,当您点击按钮时,白色圆圈显示在不需要按钮上方的其他位置。我犯的错误在哪里?
$(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>
答案 0 :(得分:7)
您的JavaScript没有任何问题,您只需要将position
按钮设置为relative
,以便.btn-over
span
的定位包含在其中。您还应该考虑将按钮的overflow
设置为hidden
,以便“涟漪”不会溢出。
$(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>
这里是一个替代实现,有一些额外的功能,你可以在你想要的任何元素上使用。要实现它,您需要从CSS复制JavaSript和重要的东西,然后您只需要将此效果的任何元素赋予data-ripple-color
属性,该属性取任何有效值{{ 3}}
要在每次单击元素时将此效果应用于元素而不等待上一个动画完成,请为其添加值为data-ripple-multiple
的{{1}}属性。有关示例,请参阅下面的按钮元素。
true
(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;
}