基于HTML实现多图上传预览功能
自己最近写了一个网页多图上传的脚本,感觉挺实用的,细节就不要说了,直接贴代码了~<head>
<style>
.pro_img{ margin-left:10px;margin-top:10px;width:300px;height: 300px;background-color: black; --border-radius:999em;overflow:hidden;float:left; --margin:5% 35%;position: relative;}
.pro_img img{ position: absolute;left: 50%;top:50%; transform: translate(-50%,-50%);width: 100%
}
.pro_img {position:relative}
.pro_img input{position: absolute;width: 100%;height: 100%;margin:0;opacity:0;z-index: 100;}
</style>
<script type="text/javascript" src="jquery.min.js"></script>
<script>
name_pic=1;
function t1(o){
//alert(name_pic);
if(o==1 || name_pic!=1){
var file="file"+o;
var img="img"+o;
var hid="hidden"+o;
var aa="a"+o;
}else{
var file="file"+name_pic;
var img="img"+name_pic;
var hid="hidden"+name_pic;
var aa="a"+name_pic;
}
var docObj = document.getElementById(file);
var imgObjPreview = document.getElementById(img);
var hidden=document.getElementById(hid);
// alert(hidden);
if (docObj.files && docObj.files) {
hidden.src=window.URL.createObjectURL(docObj.files); //获取file文件的路径
hidden.onload=function(){
var width=hidden.width;
var height=hidden.height;
var a=document.getElementById(aa);
if(width>height){
imgObjPreview.style.cssText='width:100%'; //重写css样式
}else{
imgObjPreview.style.cssText='height:100%;width:auto;';
}
imgObjPreview.src = window.URL.createObjectURL(docObj.files);
imgObjPreview.style.display = 'block';
}
}else{
return false;
}
if(o==name_pic){
var count=$('.pro_img').length;
if(count<6){
name_pic++;
var pic_div="<a class='pro_img' id='a"+name_pic+"' ><input type='file' id='file"+name_pic+"'accept='image/*' multiple='multiple' name='pic[]' onchange='t1("+name_pic+")'/><img src='upload.jpg' id='img"+name_pic+"'></a><imgid='hidden"+name_pic+"' style='display:none;'>";
$('#upload').append(pic_div);
}
}
}
</script>
</head>
<!-- multiple='multiple' -->
<form action="https://192.168.0.7/index.php/Home/Pic/upload" enctype="multipart/form-data" method="post">
<div id='upload'>
<a class='pro_img' id='a1' >
<input type='file' id='file1'accept='image/*' multiple='multiple' name='pic[]' onchange='t1(1)'/>
<img src='upload.jpg' id='img1'></a>
<imgid='hidden1' style='display:none;'>
</div>
<input type='submit' value="上传" />
</form>自己替换一些upload.png这张图片就能达到自己的需求,如果说图片点击没反应,别忘了加入jquery
以上所述是小编给大家介绍的基于HTML实现多图上传预览功能，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对CodeAE代码之家网站的支持！
https://www.uoften.com/webdesign/xhtml/20180414/68899.html
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