javascript - 通过单击删除照片

Question

我有一个将照片添加到页面的功能。她可以添加多张照片。如何做到这一点，通过点击一张照片，它是被点击删除的那张？请告诉我。

function handleFileSelect(evt) {
  var files = evt.target.files; // FileList object

  // Loop through the FileList and render image files as thumbnails.
  for (var i = 0, f; f = files[i]; i++) {

    // Only process image files.
    if (!f.type.match('image.*')) {
      continue;
    }

    var reader = new FileReader();

    // Closure to capture the file information.
    reader.onload = (function(theFile) {
      return function(e) {
        // Render thumbnail.
        var span = document.createElement('span');
        span.innerHTML = ['<img class="thumb" src="', e.target.result,
          '" title="', escape(theFile.name), '"/>'
        ].join('');
        document.getElementById('list').insertBefore(span, null);
      };
    })(f);

    // Read in the image file as a data URL.
    reader.readAsDataURL(f);
  }
}

document.getElementById('files').addEventListener('change', handleFileSelect, false);

.thumb {
  height: 75px;
  border: 1px solid #000;
  margin: 10px 5px 0 0;
}

<input type="file" id="files" name="files[]" multiple />
<output id="list"></output>

标签： javascript

Answer 1

这是否满足您的目标？

function handleFileSelect(evt) {
  var files = evt.target.files; // FileList object

  // Loop through the FileList and render image files as thumbnails.
  for (var i = 0, f; f = files[i]; i++) {

    // Only process image files.
    if (!f.type.match('image.*')) {
      continue;
    }

    var reader = new FileReader();

    // Closure to capture the file information.
    reader.onload = (function(theFile) {
      return function(e) {
        // Render thumbnail.
        var span = document.createElement('span');
        span.innerHTML = ['<img class="thumb" src="', e.target.result,
          '" title="', escape(theFile.name), '"/>'
        ].join('');
        document.getElementById('list').insertBefore(span, null);
      };
    })(f);

    // Read in the image file as a data URL.
    reader.readAsDataURL(f);
  }
}

document.getElementById('files').addEventListener('change', handleFileSelect, false);

// I added this line
document.getElementById('list').addEventListener('click', (evt) => {
   evt.target.parentNode.removeChild(evt.target);
});

.thumb {
  height: 75px;
  border: 1px solid #000;
  margin: 10px 5px 0 0;
}

<input type="file" id="files" name="files[]" multiple />
<output id="list"></output>