thinkphp jquery implements image upload and preview effects

This article mainly introduces the image upload function of thinkphp and jquery image preview effect in detail. It has certain reference value. Interested friends can refer to it.

First, the renderings:

Ignore the file button style first

Click to select a picture (browse) and select a picture at random

js code is as follows

//上传图片立即预览
 function PreviewImage(imgFile) {
  var filextension = imgFile.value.substring(imgFile.value
    .lastIndexOf("."), imgFile.value.length);
  filextension = filextension.toLowerCase();
  if ((filextension != '.jpg') && (filextension != '.gif')
    && (filextension != '.jpeg') && (filextension != '.png')
    && (filextension != '.bmp')) {
   alert("对不起，系统仅支持标准格式的照片，请您调整格式后重新上传，谢谢 !");
   imgFile.focus();
  } else {
   var path;
   if (document.all)//IE
   {
    imgFile.select();
    path = document.selection.createRange().text;
    document.getElementById("photo_info").innerHTML = "";
    document.getElementById("photo_info").style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled='true',sizingMethod='scale',src=\""
      + path + "\")";//使用滤镜效果  
   } else//FF
   {
    path = window.URL.createObjectURL(imgFile.files[0]);// FF 7.0以上
    //path = imgFile.files[0].getAsDataURL();// FF 3.0
    document.getElementById("photo_info").innerHTML = "<img id=&#39;img1&#39; width=&#39;120px&#39; height=&#39;100px&#39; src=&#39;"+path+"&#39;/>";
    //document.getElementById("img1").src = path;
   }
  }
 }

html code, actually it is not important

<p class="form-group has-success has-feedback">
       <label for="info_photo" class="col-sm-2 control-label">物品图片</label>
       <p class="col-sm-10">

        <span class="btn btn-success btn-file"> 选择图片 <span
         class="glyphicon glyphicon-picture" aria-hidden="true"></span>
         <input type="file" name="info_photo" value="" id="info_photo"
         onchange=&#39;PreviewImage(this)&#39; />
        </span>
       </p>

      </p>

      <p class="form-group has-success has-feedback">
       <label for="info_desc" class="col-sm-2 control-label"><span
        style="color: red;">* </span> 详细描述</label>
       <p class="col-sm-10">
        <textarea class="form-control" rows="5" id="info_desc"
         name="info_desc" placeholder="如需补充，请填写..." title="可包含中文数字和常用字符"></textarea>
        <p id="photo_info" class="photo_info"></p>
       </p>
      </p>

The css code is not uploaded
By the way, I would like to add the thinkphp upload image code, copy the entire release message

public function loseThing(){
   $m=M('info');
   $m->create();
   $upload = new \Think\Upload();// 实例化上传类
   $upload->maxSize =  3145728 ;// 设置附件上传大小
   $upload->exts  =  array('jpg', 'gif', 'png', 'jpeg','bmp');// 设置附件上传类型
   $upload->rootPath = './Public/';
   $upload->savePath = '/Uploads/'; // 设置附件上传目录
   $upload->autoSub = false;
   // 上传文件
   $info = $upload->upload();
   if($info) {
  // 上传成功
   foreach($info as $file){
    $m->info_photo=$file['savename'];
   }
  }
   $m->create_time=date('Y-m-d H:i:s',time()); 
   $m->uid=$_SESSION['id'];
   $m->username=$_SESSION['username'];
  /* $m->user_img=$_SESSION['filename']; */

   $m->info_type="寻物启事";//信息类型为失物
   $lastId=$m->add();
   if($lastId){
    $this->success('发布成功');
   }else{
    $this->error('发布失败,请先登录');
   } 
  }

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Implementation of image upload plug-in based on ThinkPHP5.0

jQuery implementation of image upload with local preview function

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