转载：利用微信的weui框架上传、预览和删除图片

转载至：https://blog.csdn.net/sinat_36558867/article/details/79492843

jQuery WeUI 是专为微信公众账号开发而设计的一个框架，jQuery WeUI的官网：http://jqweui.com/

需求：需要在微信公众号网页添加上传图片功能

技术选型：实现上传图片功能可选百度的WebUploader、饿了么的Element和微信的jQuery WeUI，WebUploader的缺点是自定义UI困难，自定义上传过程困难，Element的缺点是Web 控件，与手机端样式不符，而jQuery WeUI专门为微信公众号做的框架，基本不会出现问题，使用起来比较简单。最后当然就选微信的jQuery WeUI

HTML部分：

        <div class="weui-gallery" id="gallery">
            <span class="weui-gallery__img" id="galleryImg">span>
            <div class="weui-gallery__opr">
                <a href="javascript:" class="weui-gallery__del">
                    <i class="weui-icon-delete weui-icon_gallery-delete">i>
                a>
            div>
        div>
        <div class="weui-cells weui-cells_form">
            <div class="weui-cell">
                <div class="weui-cell__bd">
                    <div class="weui-uploader">
                        <div class="weui-uploader__hd">
                            <p class="weui-uploader__title">图片上传p>
                        div>
                        <div class="weui-uploader__bd">
                            <ul class="weui-uploader__files" id="uploaderFiles">

                            ul>
                            <div class="weui-uploader__input-box">
                                <input id="uploaderInput" class="weui-uploader__input zjxfjs_file" type="file" accept="image/*" multiple="">
                            div>
                        div>
                    div>
                div>
            div>
        div>

JS部分：

<script type="text/javascript" src="../js/mui.min.js">script>
<script type="text/javascript" src="../js/jquery.min.js">script>
<script src="../js/jquery-weui.min.js">script>
<script>
    mui.init();
    $(function() {
        var tmpl = '
            $gallery = $("#gallery"),
            $galleryImg = $("#galleryImg"),
            $uploaderInput = $("#uploaderInput"),
            $uploaderFiles = $("#uploaderFiles");

            $uploaderInput.on("change", function(e) {
                var src, url = window.URL || window.webkitURL || window.mozURL,
                files = e.target.files;
                for(var i = 0, len = files.length; i < len; ++i) {
                    var file = files[i];

                    if(url) {
                        src = url.createObjectURL(file);
                    } else {
                        src = e.target.result;
                    }

                    $uploaderFiles.append($(tmpl.replace('#url#', src)));
                }
            });
        var index; //第几张图片
        $uploaderFiles.on("click", "li", function() {
            index = $(this).index();
            $galleryImg.attr("style", this.getAttribute("style"));
            $gallery.fadeIn(100);
        });
        $gallery.on("click", function() {
            $gallery.fadeOut(100);
        });
        //删除图片
        $(".weui-gallery__del").click(function() {
            $uploaderFiles.find("li").eq(index).remove();
        });
    });
script>

CSS和JS文件可以去官网下载

<link rel="stylesheet" href="../css/mui.min.css">
<link rel="stylesheet" href="../css/weui.min.css"/>
<link rel="stylesheet" href="../css/jquery-weui.min.css"/>

 <script type="text/javascript" src="../js/mui.min.js">script>
 <script type="text/javascript" src="../js/jquery.min.js">script>
 <script src="../js/jquery-weui.min.js">script>

效果图：

点击加号，上传图片

点击图片，可以进行预览、删除