PHP实现上传多图即时显示与即时删除的方法

时间：2017-05-21

本文实例讲述了PHP实现上传多图即时显示与即时删除的方法。分享给大家供大家参考，具体如下：

就像这样的，每选择一个图片就会即时显示出来，附加到右边，也可以随意删除一个元素。

其实是，当type=file的input框框的onchange事件===》》》post数据提交到隐藏的ifram（form表单的target指定）===》》》接收到post数据的直接 echo script标签来返回数据到前端页面并且赋值，然后存储图片路径也是用隐藏域实现：

HTML：

<!doctype html>
<html lang="cn">
<include file="Public/head"/>
<body>
<include file="Public/nav"/>
<iframe name="upload_url" style="display:none"></iframe>
   <div class="wlog">
     <div class="wlog_t cf">
       <b>写日志</b>
     </div>
     <div class="wlog_c">
       <form class="cf" id="myform" target="" enctype="multipart/form-data" action="" method="post">
         <div class="wlog_l">
           <textarea id="content" name="data[content]"></textarea>
           <input type="hidden" id="step" value="1" name="data[step]" />
         </div>
         <div class="wlog_r">
           <h2>选择装修阶段</h2>
           <b class="cur" mine="1" style="line-height:20px;">准备开工</b>
           <b mine="2" >水电</b>
           <b mine="3">泥木</b>
           <b mine="4">油漆</b>
           <b mine="5">竣工</b>
           <b mine="6">软装</b>
           <!-- <input type="hidden" value="准备开工"> -->
         </div>
         <div class="wlog_f cf">
           <h2><b>上传图片</b>选择装修过程中的照片，每张低于5M，支持JPG/JPEG/PNG格式，最多9张</h2>
           <div class="wlog_p cf">
             <a href="javascript:;" rel="external nofollow" ><img src="__PUBLIC__/home/images/2016-10-29_231703.png" alt=""><input onchange="submitimg()" type="file" name="thumb"/></a>
             <div id="addimg"></div>
             <!-- <b><img src="__PUBLIC__/home/images/2016-10-18_094906.png" alt=""><i>x</i></b>
             <b><img src="__PUBLIC__/home/images/2016-10-18_094906.png" alt=""><i>x</i></b>
             <b><img src="__PUBLIC__/home/images/2016-10-18_094906.png" alt=""><i>x</i></b>
             <b><img src="__PUBLIC__/home/images/2016-10-18_094906.png" alt=""><i>x</i></b>
             <b><img src="__PUBLIC__/home/images/2016-10-18_094906.png" alt=""><i>x</i></b>
             <b><img src="__PUBLIC__/home/images/2016-10-18_094906.png" alt=""><i>x</i></b>
             <b><img src="__PUBLIC__/home/images/2016-10-18_094906.png" alt=""><i>x</i></b>
             <b><img src="__PUBLIC__/home/images/2016-10-18_094906.png" alt=""><i>x</i></b> -->
           </div>
         </div>
         <div class="wlog_sm"><input type="botton" onclick="return goods_form_submit()" readonly="readonly" value="发布日志"></div>
       </form>
     </div>
   </div>
<include file="Public/footer"/>
  <script type="text/javascript">
  function submitimg(){
    $("#myform").attr('target','upload_url');
    $("#myform").attr('action',"{:U('Journal/submitimg')}");
    $("#myform").submit();
  }
  function goods_form_submit()
  {
     if(!$('#content').val()){
      alert('请填写日志');
      return false;
    }
    $('#myform').attr('target','');
    $('#myform').attr('action','');
    $('#myform').submit();
  }
  function callblack_img(path,uid)
  {  var html="";
    var dir = "{:C(FILE_PATH)}";
    var html ='<b><img src='+dir+path+'><i>x</i><input type="hidden" value="'+path+'" name="thumb['+uid+']"></b>';
    $('#addimg').append(html);
  }
  </script>
  <script type="text/javascript" src="__PUBLIC__/home/js/jquery-1.10.1.min.js"></script>
  <script type="text/javascript" src="__PUBLIC__/home/js/basis.js"></script>
  <script>
  $(function(){
    $('.wlog_r b').click(function(event) {
      $(this).addClass('cur').siblings('b').removeClass('cur');
      $('.wlog_r input[type=hidden]').val($(this).text());
    });
    $("#addimg").delegate("i","click",function () {
      $(this).parent("b").remove();
    })
  })
    $("b").click(function(){
      var value =$(this).attr('mine');
      $("#step").val(value);
    })
  </script>
</body>
</html>

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PHP实现上传多图即时显示与即时删除的方法

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