html里关于多图上传、点击删除、点击放大功能整合_html图片上传后可删除-优快云博客

本文分享了一套完整的多图片上传、预览、放大及删除功能的代码实现，包括HTML、CSS和JS部分，适用于网页应用开发。

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在多图片上传和点击删除和点击放大预览功能开发时，总是无法找到完整的代码。
在结合各个资料和自己的研究后，总结出了以下代码。
包括的功能有：多图上传、点击删除图片、点击放大预览。
关于保存按钮过于复杂，后面会加以补充。
先来看看效果图
初始化页面

上传图片的样子添加图片后

在这里插入图片描述
图片点击放大预览，这里添加了一个遮罩层的效果

删除图片的效果，右上角x是一张图片，添加了点击删除的事件

代码部分：
html

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>图片上传预览点击放大</title>
    <meta name="viewport"content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no"/>
        </head>
        <body>
		<div class="filterPop" onclick="toHide()"></div>
		<div class="setPops">
		    <img src="" alt="" width="100%" height="100%">
		</div>   <!-- 添加遮罩层 -->
		
		<div class="Box">图片上传</div>
		<div class="Box1">
			<div class="productImg">
				<div id="uploadBox"></div> 
				<div class="uploadDIv">
					<span>+</span><input type="file" name="file" multiple="multiple" id="inputs" accept="image/*" class='fileTest' multiple="multiple" />
				</div>
			</div>
		</div>
</body>
</html>

css：

img {
	width: 100%;
	display: block;
	border: none;
	vertical-align: bottom;
	border: none;
}

.Box1 {
   background-color: #FEFEFF;
    color: #333333;
    font-size: 18px;
    border: 2px solid #088DEA;
    margin-top: 5%;
    margin-left: 5%;
    width: 90%;
}
.Box {
    height: 40px;
    margin-left: 6%;
    line-height: 65px;
    font-size: 18px;
    font-family: FangSong;
    font-weight: bold;
}
.productImg {
height: 530px;
overflow: hidden;
} 
.imgBiMG{
    width: 20%;
    height: 84px;
    float: left;
    display: block;
    margin-left: 7%;
    margin-top: 2%;
}
.uploadDIv {
    width: 95px;
    height: 75px;
    background-color: #edf0f2;
    font-size: 70px;
    color: #bfbfbf;
    text-align: center;
    line-height: 75px;
    float: left;
    position: relative;
    left: 7%;
    top: 5%;
}
.uploadDIv input {
	width: 78px;
	height: 78px;
	opacity: 0;
	position: absolute;
	right: 0px;
	top: 0px;
	z-index: 4;
	padding: 0;
}

.setPops{width: 70%;
    position: absolute;
    left:15%;
    top:50%;
    z-index: 10;
    overflow: hidden;
    display: none;
}
.filterPop{
    background: rgba(0,0,0,.5);
    position: absolute;
    left:0px;
    top:0px;
    width: 100%;
    height:100%;
    z-index: 9;
    overflow: hidden;
    display: none;
}

js:

<script src="../js/jquery.1.10.2.js"></script> //引用jquery，任何版本都行
<script type="application/javascript">
var i = 0;
$(function() {
	var img = []; //创建一个空对象用来保存传入的图片
	var AllowImgFileSize = '1024'; //1兆
	$("#inputs").change(function() {
	var fil = this.files;
	for(var i = 0; i < fil.length; i++) {
    	var curr = fil[i].size;
    	if(curr > AllowImgFileSize * 1024) { //当图片大于99兆提示
    		layer.msg("图片文件大小超过限制 请上传小于1M的文件");
    	} else {
	    	reads(fil[i]);
	    	img.push(fil[i]); // 将传入的图片push到空对象中
    	}
	}
	if(img.length >= 9) { //判断图片的数量，数量不能超过6张
	$('.uploadDIv').hide();
	} else {
	$('.uploadDIv').show();
	}
	});
	})
	function removethis(i){
	
	$("#img"+i+"").remove()
	if($("#uploadBox").children().length<9){
		$('.uploadDIv').show();
	}
}
function reads(fil) {
var reader = new FileReader();
reader.readAsDataURL(fil);	 
reader.onload = function() {
document.getElementById("uploadBox").innerHTML += "<div id='img"+i+"' class='divImg' id='uploadImg'><img onclick='showpicture(this)' src='" + reader.result + "' class='imgBiMG'><img style='width: 5%; float: left;margin-top: 2%; display: block; display: block;' src='../image/sc.png' onclick='removethis("+i+")'></div>";
i++
}
}

//添加点击图片放大
function showpicture(pic){
	$(".filterPop").css("display","block")
	 var setPopsWidth=$(".setPops").width();
    $(".setPops, .filterPop").fadeIn();
    $(".setPops").css({height:setPopsWidth,marginTop:-setPopsWidth/2+"px"});
    $(".setPops").children("img")[0].src=pic.src;
}
function toHide() {
    $(".setPops, .filterPop").fadeOut()
}
</script>

完整代码：

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>图片上传预览点击放大</title>
    <meta name="viewport"content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no"/>
        

</head>

 <style type="text/css">
img {
	width: 100%;
	display: block;
	border: none;
	vertical-align: bottom;
	border: none;
}

.Box1 {
   background-color: #FEFEFF;
    color: #333333;
    font-size: 18px;
    border: 2px solid #088DEA;
    margin-top: 5%;
    margin-left: 5%;
    width: 90%;
}
.Box {
    height: 40px;
    margin-left: 6%;
    line-height: 65px;
    font-size: 18px;
    font-family: FangSong;
    font-weight: bold;
}
.productImg {
height: 530px;
overflow: hidden;
} 
.imgBiMG{
    width: 20%;
    height: 84px;
    float: left;
    display: block;
    margin-left: 7%;
    margin-top: 2%;
}
.uploadDIv {
    width: 95px;
    height: 75px;
    background-color: #edf0f2;
    font-size: 70px;
    color: #bfbfbf;
    text-align: center;
    line-height: 75px;
    float: left;
    position: relative;
    left: 7%;
    top: 5%;
}
.uploadDIv input {
	width: 78px;
	height: 78px;
	opacity: 0;
	position: absolute;
	right: 0px;
	top: 0px;
	z-index: 4;
	padding: 0;
}

.setPops{width: 70%;
    position: absolute;
    left:15%;
    top:50%;
    z-index: 10;
    overflow: hidden;
    display: none;
}
.filterPop{
    background: rgba(0,0,0,.5);
    position: absolute;
    left:0px;
    top:0px;
    width: 100%;
    height:100%;
    z-index: 9;
    overflow: hidden;
    display: none;
}

 </style>

<body>
		<div class="filterPop" onclick="toHide()"></div>
		<div class="setPops">
		    <img src="" alt="" width="100%" height="100%">
		</div>   <!-- 添加遮罩层 -->
		
		<div class="Box">图片上传</div>
		<div class="Box1">
			<div class="productImg">
				<div id="uploadBox"></div> 
				<div class="uploadDIv">
					<span>+</span><input type="file" name="file" multiple="multiple" id="inputs" accept="image/*" class='fileTest' multiple="multiple" />
				</div>
			</div>
		</div>
</body>
<script src="../js/jquery.1.10.2.js"></script>
<script type="application/javascript">
var i = 0;
$(function() {
	var img = []; //创建一个空对象用来保存传入的图片
	var AllowImgFileSize = '1024'; //1兆
	$("#inputs").change(function() {
	var fil = this.files;
	for(var i = 0; i < fil.length; i++) {
    	var curr = fil[i].size;
    	if(curr > AllowImgFileSize * 1024) { //当图片大于99兆提示
    		layer.msg("图片文件大小超过限制 请上传小于1M的文件");
    	} else {
	    	reads(fil[i]);
	    	img.push(fil[i]); // 将传入的图片push到空对象中
    	}
	}
	if(img.length >= 9) { //判断图片的数量，数量不能超过6张
	$('.uploadDIv').hide();
	} else {
	$('.uploadDIv').show();
	}
	});
	})
	function removethis(i){
	
	$("#img"+i+"").remove()
	if($("#uploadBox").children().length<9){
		$('.uploadDIv').show();
	}
}
function reads(fil) {
var reader = new FileReader();
reader.readAsDataURL(fil);	 
reader.onload = function() {
document.getElementById("uploadBox").innerHTML += "<div id='img"+i+"' class='divImg' id='uploadImg'><img onclick='showpicture(this)' src='" + reader.result + "' class='imgBiMG'><img style='width: 5%; float: left;margin-top: 2%; display: block; display: block;' src='../image/sc.png' onclick='removethis("+i+")'></div>";
i++
}
}

//添加点击图片放大
function showpicture(pic){
	$(".filterPop").css("display","block")
	 var setPopsWidth=$(".setPops").width();
    $(".setPops, .filterPop").fadeIn();
    $(".setPops").css({height:setPopsWidth,marginTop:-setPopsWidth/2+"px"});
    $(".setPops").children("img")[0].src=pic.src;
}
function toHide() {
    $(".setPops, .filterPop").fadeOut()
}
</script>

</html>

完成搞定。