在制作h5移动端页面时经常遇到可以滚动的导航栏,下面是利用Swiper来实现的:
1.引入相关插件
<link rel="stylesheet" href="../css/swiper.css" > <script src="http://www.jq22.com/jquery/jquery-1.7.1.js"></script> <script src="../js/swiper.js"></script>
2、编写view(界面)
<div class="box"> <div class="swiper-container"> <div class="swiper-wrapper"> <div class="swiper-slide">首页</div> <div class="swiper-slide">课程</div> <div class="swiper-slide">评价</div> <div class="swiper-slide">相册</div> <div class="swiper-slide">教师</div> <div class="swiper-slide">资讯</div> <div class="swiper-slide">校区</div> <div class="swiper-slide">关于</div> <span></span> </div> </div> </div>
3、编写style
*{ margin: 0; padding: 0; } .box{ 500px; height: 50px; border: 1px solid #000; margin: 100px auto; } .swiper-container{ auto!important; height: 100%; text-align: center; line-height: 50px; color: #000; font-size: 20px; } .swiper-wrapper{ position: relative; auto!important; height: 100%; } .swiper-slide { list-style: none; display: flex; justify-content: flex-start; flex-wrap: nowrap; cursor: pointer; } .swiper-wrapper span{ position: absolute; height: 3px; background: #000; left: 1%; top: 85%; } .swiper-slide{ auto!important; margin-right: 15px!important; padding: 0 18px; }
为了让每个swiper-slide的宽度由内容撑起,右边显示一半是提示用户这个导航栏是可以滚动的,所以在初始化时要设置swiper的slidesPerView为auto,slidesPerView: “auto”, 同时要在css设置swiper-slide的样式为:
.swiper-slide {
auto !important;
margin-right: 15px !important;
padding: 0 18px;
}
4、编写js
$(function () { $(".swiper-wrapper span").css({ $(".swiper-slide")[0].offsetWidth }); let navScroll = new Swiper(".box .swiper-container", { freeMode: true, slidesPerView: "auto", freeModeMomentumRatio: 0.5, on: { //当前swiper-slide点击时触发事件 click: function (e) { let thisWidth = this.clickedSlide.offsetWidth; let thisLeft = this.clickedSlide.offsetLeft; let offsetX = this.width / 2 - thisLeft - thisWidth / 2; //偏移量在1/2视口内时,容器不发生偏移 if (offsetX > 0) { offsetX = 0; } //offsetX小于容器最大偏移时,让偏移量等于容器最大的偏移量 else if (offsetX < this.maxTranslate()) { offsetX = this.maxTranslate(); } //设置容器的过渡动画 this.setTransition(300); this.setTranslate(offsetX); } } }); })