jq上传图片并预览

版权声明:本文为博主原创文章,未经博主允许不得转载。 https://blog.csdn.net/weixin_39967349/article/details/78374866
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Document</title>
  <script src="https://cdn.bootcss.com/jquery/3.2.1/jquery.min.js"></script>
  <style media="screen">
  .pic{
      width:100px;
      height:100px;
      border-radius:50% ;
      margin:20px auto;
      cursor: pointer;
      background-image: url(./nike3.jpeg);
      background-size: cover;
      }
  </style>
</head>
<body>
  <div>
      <img class="pic" src="" >
      <input class="upload" name="file" accept="image/*" type="file" style="display: none"/>
  </div>
  <div>
      <img class="pic" src="" >
      <input class="upload" name="file" accept="image/*" type="file" style="display: none"/>
  </div>
</body>
</html>
<script>
$(function() {
  $(".pic").click(function () {
    $(this).parent().find(".upload").click(); //隐藏了input:file样式后,点击头像就可以本地上传
      $(this).parent().find(".upload").on("change",function(){
      var objUrl = getObjectURL(this.files[0]) ; //获取图片的路径,该路径不是图片在本地的路径
      if (objUrl) {
        $(this).parent().find(".pic").attr("src", objUrl) ; //将图片路径存入src中,显示出图片
      }
    });
  });
});

function getObjectURL(file) {
    var url = null ;
    if (window.createObjectURL!=undefined) { // basic
        url = window.createObjectURL(file) ;
    } else if (window.URL!=undefined) { // mozilla(firefox)
        url = window.URL.createObjectURL(file) ;
    } else if (window.webkitURL!=undefined) { // webkit or chrome
        url = window.webkitURL.createObjectURL(file) ;
    }
    return url ;
}
</script>

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转载自blog.csdn.net/weixin_39967349/article/details/78374866