jquery多图上传预览

html部分

<form method="post" action="" id="passForm" enctype="multipart/form-data" multipart="">

    <div id="Pic_pass">
        <p style="font-size: 20px;font-weight: bold;">请上传护照详细照片 </p>
        <p><span style="color: red">注：每张照片大写不可超过4M，且最多可以传十张</span></p>
        <div class="picDiv">
            <div class="addImages">

                <input type="file" class="file" id="fileInput" multiple="" accept="image/png, image/jpeg, image/gif, image/jpg">
                <div class="text-detail">
                    <span>+</span>
                    <p>点击上传</p>
                </div>
            </div>
        </div>
    </div>
    <div class="msg" style="display: none;"></div>
</form>

css部分

 .imageDiv {
	display:inline-block;
	width:160px;
	height:130px;
	-webkit-box-sizing:border-box;
	-moz-box-sizing:border-box;
	box-sizing:border-box;
	border:1px dashed darkgray;
	background:#f8f8f8;
	position:relative;
	overflow:hidden;
	margin:10px
}
.cover {
	position:absolute;
	z-index:1;
	top:0;
	left:0;
	width:160px;
	height:130px;
	background-color:rgba(0,0,0,.3);
	display:none;
	line-height:125px;
	text-align:center;
	cursor:pointer;
}
.cover .delbtn {
	color:red;
	font-size:20px;
}
.imageDiv:hover .cover {
	display:block;
}
.addImages {
	display:inline-block;
	width:160px;
	height:130px;
	-webkit-box-sizing:border-box;
	-moz-box-sizing:border-box;
	box-sizing:border-box;
	border:1px dashed darkgray;
	background:#f8f8f8;
	position:relative;
	overflow:hidden;
	margin:10px;
}
.text-detail {
	margin-top:40px;
	text-align:center;
}
.text-detail span {
	font-size:40px;
}
.file {
	position:absolute;
	top:0;
	left:0;
	width:160px;
	height:130px;
	opacity:0;
}

js部分

//图片上传预览功能
var userAgent = navigator.userAgent; //用于判断浏览器类型

$(".file").change(function() {
    //获取选择图片的对象
    var docObj = $(this)[0];
    var picDiv = $(this).parents(".picDiv");
    //得到所有的图片文件
    var fileList = docObj.files;
    //循环遍历
    for (var i = 0; i < fileList.length; i++) {
        //动态添加html元素
        var picHtml = "<div class=‘imageDiv‘ > <img id=‘img" + fileList[i].name + "‘ /> <div class=‘cover‘><i class=‘delbtn‘>删除</i></div></div>";
        console.log(picHtml);
        picDiv.prepend(picHtml);
        //获取图片imgi的对象
        var imgObjPreview = document.getElementById("img" + fileList[i].name);
        if (fileList && fileList[i]) {
            //图片属性
            imgObjPreview.style.display = ‘block‘;
            imgObjPreview.style.width = ‘160px‘;
            imgObjPreview.style.height = ‘130px‘;
            //imgObjPreview.src = docObj.files[0].getAsDataURL();
            //火狐7以上版本不能用上面的getAsDataURL()方式获取，需要以下方式
            if (userAgent.indexOf(‘MSIE‘) == -1) {
                //IE以外浏览器
                imgObjPreview.src = window.URL.createObjectURL(docObj.files[i]); //获取上传图片文件的物理路径;
                console.log(imgObjPreview.src);
                // var msgHtml = ‘<input type="file" id="fileInput" multiple/>‘;
            } else {
                //IE浏览器
                if (docObj.value.indexOf(",") != -1) {
                    var srcArr = docObj.value.split(",");
                    imgObjPreview.src = srcArr[i];
                } else {
                    imgObjPreview.src = docObj.value;
                }
            }
        }
    }

    /*删除功能*/
    $(".delbtn").click(function() {
        var _this = $(this);
        _this.parents(".imageDiv").remove();
    });
});

原文地址：https://www.cnblogs.com/renewload/p/11225142.html