JS 手机端多张图片上传

代码如下

<!DOCTYPE html>
<html lang="zh-cn">

<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <title>多图片上传</title>

    <style>
        * {
            margin: 0;
            padding: 0;
        }
        /*图片上传*/
        
        html,
        body {
            width: 100%;
            height: 100%;
        }
        
        .container {
            width: 100%;
            height: 100%;
            overflow: auto;
            clear: both;
        }
        
        .z_photo {
            width: 5rem;
            height: 5rem;
            padding: 0.3rem;
            overflow: auto;
            clear: both;
            margin: 1rem auto;
            border: 1px solid #555;
        }
        
        .z_photo img {
            width: 1rem;
            height: 1rem;
        }
        
        .z_addImg {
            float: left;
            margin-right: 0.2rem;
        }
        
        .z_file {
            width: 1rem;
            height: 1rem;
            background: url(z_add.png) no-repeat;
            background-size: 100% 100%;
            float: left;
            margin-right: 0.2rem;
        }
        
        .z_file input::-webkit-file-upload-button {
            width: 1rem;
            height: 1rem;
            border: none;
            position: absolute;
            outline: 0;
            opacity: 0;
        }
        
        .z_file input#file {
            display: block;
            width: auto;
            border: 0;
            vertical-align: middle;
        }
        /*遮罩层*/
        
        .z_mask {
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, .5);
            position: fixed;
            top: 0;
            left: 0;
            z-index: 999;
            display: none;
        }
        
        .z_alert {
            width: 3rem;
            height: 2rem;
            border-radius: .2rem;
            background: #fff;
            font-size: .24rem;
            text-align: center;
            position: absolute;
            left: 50%;
            top: 50%;
            margin-left: -1.5rem;
            margin-top: -2rem;
        }
        
        .z_alert p:nth-child(1) {
            line-height: 1.5rem;
        }
        
        .z_alert p:nth-child(2) span {
            display: inline-block;
            width: 49%;
            height: .5rem;
            line-height: .5rem;
            float: left;
            border-top: 1px solid #ddd;
        }
        
        .z_cancel {
            border-right: 1px solid #ddd;
        }

    </style>
</head>

<body>

    <div class="container">
        <!--    照片添加    -->
        <div class="z_photo">
            <div class="z_file">
                <input type="file" name="file" id="file" value="" accept="image/*" multiple onchange="imgChange('z_photo','z_file');" />

            </div>

        </div>

        <!--遮罩层-->
        <div class="z_mask">
            <!--弹出框-->
            <div class="z_alert">
                <p>确定要删除这张图片吗？</p>
                <p>
                    <span class="z_cancel">取消</span>
                    <span class="z_sure">确定</span>
                </p>
            </div>
        </div>
    </div>


    <script type="text/javascript">
        //px转换为rem
        (function(doc, win) {
            var docEl = doc.documentElement,
                resizeEvt = 'orientationchange' in window ? 'orientationchange' : 'resize',
                recalc = function() {
                    var clientWidth = docEl.clientWidth;
                    if (!clientWidth) return;
                    if (clientWidth >= 640) {
                        docEl.style.fontSize = '100px';
                    } else {
                        docEl.style.fontSize = 100 * (clientWidth / 640) + 'px';
                    }
                };

            if (!doc.addEventListener) return;
            win.addEventListener(resizeEvt, recalc, false);
            doc.addEventListener('DOMContentLoaded', recalc, false);
        })(document, window);

        function imgChange(obj1, obj2) {
            //获取点击的文本框
            var file = document.getElementById("file");
            //存放图片的父级元素
            var imgContainer = document.getElementsByClassName(obj1)[0];
            //获取的图片文件
            var fileList = file.files;

            //文本框的父级元素
            var input = document.getElementsByClassName(obj2)[0];
            var imgArr = [];
            //遍历获取到得图片文件
            for (var i = 0; i < fileList.length; i++) {
                var imgUrl = window.URL.createObjectURL(file.files[i]);
                imgArr.push(imgUrl);
                var img = document.createElement("img");
                img.setAttribute("src", imgArr[i]);
                var imgAdd = document.createElement("div");
                imgAdd.setAttribute("class", "z_addImg");
                imgAdd.appendChild(img);
                imgContainer.appendChild(imgAdd);
            };
            imgRemove();
        };

        function imgRemove() {
            var imgList = document.getElementsByClassName("z_addImg");
            var mask = document.getElementsByClassName("z_mask")[0];
            var cancel = document.getElementsByClassName("z_cancel")[0];
            var sure = document.getElementsByClassName("z_sure")[0];
            for (var j = 0; j < imgList.length; j++) {
                imgList[j].index = j;
                imgList[j].onclick = function() {
                    var t = this;
                    mask.style.display = "block";
                    cancel.onclick = function() {
                        mask.style.display = "none";
                    };
                    sure.onclick = function() {
                        mask.style.display = "none";
                        t.style.display = "none";
            //$(t).remove();//引用了Jquery才能这样使用
                    };

                }
            };
        };

    </script>
</body>

</html>

这是效果图：

这个配合base64转码图片使用代码如下：不过不能无限制上传图片哈，我这里限制了只能上传5张图片

<!DOCTYPE html>

<html lang="en">
<head runat="server">
    <meta charset="utf-8" />
    <meta name="renderer" content="webkit|ie-comp|ie-stand" />
    <meta name="viewport" content="width=device-width,height=device-height,user-scalable=no" />
    <meta name="keywords" content="" />
    <meta name="description" content="" />
    <title></title>
    <link href="../service/css/bootstrap.min.css" rel="stylesheet" />
    <script src="scripts/Base64Img.js" type="text/javascript"></script>
    <script type="text/javascript" src="../service/scripts/jquery-2.1.4.min.js"></script>
    <style type="text/css">
        * {
            margin: 0;
            padding: 0;
        }
        /*图片上传*/

        html,
        body {
            width: 100%;
            height: 100%;
        }

        .container {
            width: 100%;
            height: 100%;
            overflow: auto;
            clear: both;
        }

        .z_photo {
            width: 100%;
            height: 5rem;
            padding: 0.3rem;
            overflow: auto;
            clear: both;
            border: 1px dashed #ddd;
        }

            .z_photo img {
                width: 1rem;
                height: 1rem;
            }

        .z_addImg {
            float: left;
            margin-right: 0.2rem;
            margin-bottom: 0.2rem;
        }

        .z_file {
            width: 1rem;
            height: 1rem;
            background: url(/images/z_add.png) no-repeat;
            background-size: 100% 100%;
            float: left;
            margin-right: 0.2rem;
        }

            .z_file input::-webkit-file-upload-button {
                width: 1rem;
                height: 1rem;
                border: none;
                position: absolute;
                outline: 0;
                opacity: 0;
            }

            .z_file input#file {
                display: block;
                width: auto;
                border: 0;
                vertical-align: middle;
            }
        /*遮罩层*/

        .z_mask {
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, .5);
            position: fixed;
            top: 0;
            left: 0;
            z-index: 999;
            display: none;
        }

        .z_alert {
            width: 3rem;
            height: 2rem;
            border-radius: .2rem;
            background: #fff;
            font-size: .24rem;
            text-align: center;
            position: absolute;
            left: 50%;
            top: 50%;
            margin-left: -1.5rem;
            margin-top: -2rem;
        }

            .z_alert p:nth-child(1) {
                line-height: 1.5rem;
            }

            .z_alert p:nth-child(2) span {
                display: inline-block;
                width: 49%;
                height: .5rem;
                line-height: .5rem;
                float: left;
                border-top: 1px solid #ddd;
            }

        .z_cancel {
            border-right: 1px solid #ddd;
        }
    </style>
</head>
<body class="bg-fff">
    <form id="form1" runat="server">
        <div class="section" id="container">
            <div id="head" class="section">
                <div class="section header">
                    <h1>订单评价</h1>
                    <a href="javascript:void(0);" class="back-btn">
                        <img src="images/back.png" /></a>
                    <!-- 跳转到会员 -->
                    <a href="javascript:void(0);" class="head-icon" id="inMember">
                        <img src="images/member.png" /></a>
                </div>
            </div>
            <div id="content" class="section">
                <div class="section evaluate-box">
                    <div class="section evaluate-head">

                        <h3>商品评价：</h3>
                        <!-- 评价的星级可通过e-star属性获取 -->
                        <!-- 提交的时候向后台传递e-star的属性值就是星级数 -->
                        <div class="f-left evaluate-star" e-star="0" id="spgoodsLevel">
                            <span>
                                <img src="images/star_b.png"></span>
                            <span>
                                <img src="images/star_b.png"></span>
                            <span>
                                <img src="images/star_b.png"></span>
                            <span>
                                <img src="images/star_b.png"></span>
                            <span>
                                <img src="images/star_b.png"></span>
                        </div>
                    </div>
                    <div class="section evaluate-txt">
                        <textarea placeholder="商品评价？质量、安全等评价" rows="5" id="txtgoodsComment"></textarea>
                    </div>
                </div>
                <div class="section evaluate-box">
                    <div class="section evaluate-head">
                        <h3>图片上传：<span style="color: rgba(0, 0, 0, .5);">最多只能传5张</span></h3>
                    </div>
                </div>
                <div>
                    <div class="container">
                        <!--    照片添加    -->
                        <div class="z_photo">
                            <div class="z_file">
                                <input type="file" name="file" id="file" value="" accept="image/*" multiple onchange="imgChange('z_photo','z_file');" />

                                <div class="hidden">
                                    <div class="span" id="update_file_label"></div>
                                    <input type="hidden" id="base64_output1" />
                                    <input type="hidden" id="base64_output2" />
                                    <input type="hidden" id="base64_output3" />
                                    <input type="hidden" id="base64_output4" />
                                    <input type="hidden" id="base64_output5" />
                                    <div class="strong red" id="img_size"></div>
                                    <img id="img_prev" src="../images/member/nophoto.gif" style="max-width: 100%; border: 1px solid gray;">
                                </div>
                            </div>
                        </div>
                        <!--遮罩层-->
                        <div class="z_mask">
                            <!--弹出框-->
                            <div class="z_alert">
                                <p style="display: block;">确定要删除这张图片吗？</p>
                                <p style="display: block;">
                                    <span class="z_cancel">取消</span>
                                    <span class="z_sure">确定</span>
                                </p>
                            </div>
                        </div>
                    </div>

                    <script type="text/javascript">
                        //px转换为rem
                        (function (doc, win) {
                            var docEl = doc.documentElement,
                                resizeEvt = 'orientationchange' in window ? 'orientationchange' : 'resize',
                                recalc = function () {
                                    var clientWidth = docEl.clientWidth;
                                    if (!clientWidth) return;
                                    if (clientWidth >= 640) {
                                        docEl.style.fontSize = '100px';
                                    } else {
                                        docEl.style.fontSize = 100 * (clientWidth / 640) + 'px';
                                    }
                                };

                            if (!doc.addEventListener) return;
                            win.addEventListener(resizeEvt, recalc, false);
                            doc.addEventListener('DOMContentLoaded', recalc, false);
                        })(document, window);

                        function imgChange(obj1, obj2) {

                            var imgCount = ($(".z_addImg").length + 1);
                            if (imgCount <= 5) {
                                var _baseImgSrc = "base64_output" + imgCount;
                                //获取点击的文本框
                                var file = document.getElementById("file");
                                //存放图片的父级元素
                                var imgContainer = document.getElementsByClassName(obj1)[0];
                                //获取的图片文件
                                var fileList = file.files;

                                //文本框的父级元素
                                var input = document.getElementsByClassName(obj2)[0];
                                var imgArr = [];
                                //遍历获取到得图片文件
                                for (var i = 0; i < fileList.length; i++) {
                                    var imgUrl = window.URL.createObjectURL(file.files[i]);
                                    imgArr.push(imgUrl);
                                    var img = document.createElement("img");
                                    img.setAttribute("src", imgArr[i]);
                                    var imgAdd = document.createElement("div");
                                    imgAdd.setAttribute("class", "z_addImg");
                                    imgAdd.appendChild(img);
                                    imgContainer.appendChild(imgAdd);
                                };
                                imgRemove();
                                console.log(_baseImgSrc);
                                $("#update_file_label").html(this.value);
                                gen_base64(_baseImgSrc, 'img_size', 'img_prev', 'file');
                            }
                            else {
                                alert("上传图片不能超过5张");
                            }

                        };

                        function imgRemove() {
                            var imgList = document.getElementsByClassName("z_addImg");
                            var mask = document.getElementsByClassName("z_mask")[0];
                            var cancel = document.getElementsByClassName("z_cancel")[0];
                            var sure = document.getElementsByClassName("z_sure")[0];
                            for (var j = 0; j < imgList.length; j++) {
                                imgList[j].index = j;
                                imgList[j].onclick = function () {
                                    var t = this;
                                    mask.style.display = "block";
                                    cancel.onclick = function () {
                                        mask.style.display = "none";
                                    };
                                    sure.onclick = function () {
                                        mask.style.display = "none";
                                        $(t).remove();
                                        //t.style.display = "none";
                                    };

                                }
                            };
                        };

                    </script>
                </div>
               </div>
        </div>
        <input id="txtOrderID" type="hidden" runat="server" />
        <input id="txtMemID" type="hidden" runat="server" />
    </form>
</body>
</html>

Base64Img.js的代码：

function $_(id) {
    return document.getElementById(id);
}
/*把图片转成Base64码
@param 参数说明：
codeInput:把转好的Base64码存放在哪个控件中
imgSize:图片的大小（单位是KB）
imgSrc:点击上传后图片的显示的标签
fileInputId:上传控件的ID
*/
function gen_base64(codeInput, imgSize, imgSrc, fileInputId) {
    $_(codeInput).value = '';
    $_(imgSize).innerHTML = '';
    $_(imgSrc).src = '../images/member/nophoto.gif';
    var file = $_(fileInputId).files[0];
    if (!/image\/\w+/.test(file.type)) {
        alert("请确保文件为图像类型");
        return false;
    }
    r = new FileReader();  //本地预览
    r.onload = function () {
        $_(codeInput).value = r.result;
        $_(imgSrc).src = r.result;
        //$("#img_prev").attr("src", r.result);
        //$("#img_prev").css("width", "50%");
        $_(imgSize).innerHTML = "    图片大小：" + Math.round(r.result.length / 1024 * 1000) / 1000 + " KB";
    }
    r.readAsDataURL(file);
}

posted @ 2018-08-07 15:17 风琴~云淡阅读(378) 评论(0) 编辑收藏举报

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