在上载不在Internet Explorer 8中之前预览图像

时间:2015-08-28 03:13:15

标签: javascript jquery html file-upload internet-explorer-8

我正在使用文件上传来上传图片,然后在提交之前在div上预览图像。

我的HTML:

                 <div class="modal" id="definitionModal">
                    <div class="modal-dialog">
                      <div class="modal-content">
                        <div class="modal-header">
                          <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
                          <h4>Definition</h4>
                        </div>
                        <div class="modal-body">
                          <div class="grid1">
                            <textarea>Example: Lorem Ipsum ignus sempres cunando valore sendre indire trane fact ilsa nid france</textarea>
                          </div>

                           <div class="image-upload">
                            <label for="uploadFile1">
                                <img class="upload-img" src="img/camera-icon.jpg">
                            </label>
                             <input class="uploadFile" id="uploadFile1" type="file" name="image" class="img" />
                            </div>

                          <div class="grid2">
                            <div class="imagePreview imagePreview1"></div>
                          </div>

                        </div><!-- end modal-body -->

                        <div class="modal-footer">
                          <a href="#" class="btn btn-primary">Save</a>
                          <a href="#" class="btn btn-primary">Save &amp; Add Another</a>
                          <a href="#" data-dismiss="modal" class="btn btn-primary btn-white">Cancel</a>
                        </div>
                      </div>
                    </div>
                  </div><!-- end Definition Modal -->

我的CSS:

.modal .grid2 {display: none;}
.upload-img {height: 100px; width: 100px;}
.modal .grid2 {
    background: #ebebeb;
    height: 100px;
    padding: 5% 0;
}
    .grid2 img {display: flex; margin-left: 15%; width: 70px;}

    .imagePreview {
        width: 70px;
        height: 48px;
        margin: auto;
        position: relative;
        top: 0px;
        left: 17%;
        background-position: center center;
        background-size: cover;
        -webkit-box-shadow: 0 0 1px 1px rgba(0, 0, 0, .3);
        display: inline-block;
    }
    .uploadFile {margin-left: 15px; margin-top: 25px; color: #FFF; max-width: 95%;}

使一切运转的JavaScript:

$(function() {
                $("#uploadFile1").on("change", function()
                {
                    var files = !!this.files ? this.files : [];
                    if (!files.length || !window.FileReader) return; // no file selected, or no FileReader support

                    if (/^image/.test( files[0].type)){ // only image file
                        var reader = new FileReader(); // instance of the FileReader
                        reader.readAsDataURL(files[0]); // read the local file

                        reader.onloadend = function(){ // set image data as background of div
                            $(".imagePreview1").css("background-image", "url("+this.result+")");
                            $("#definitionModal .image-upload").css("display" , "none");
                            $("#definitionModal .grid2").css("display" , "block");
                        }
                    }
                });
            });

现在,这完全符合我在所有现代浏览器中的需求。但是在Internet Explorer 8上进行测试时却没有。我想知道是否有IE8的解决方法,因为我也需要支持它。

网站的实时链接可在以下网址找到:
http://www.expertfrontend.com/test/index.html

(点击“添加事实”将打开图片上传的模式)

1 个答案:

答案 0 :(得分:0)

我可以使用下面的代码在Internet Explorer 8上运行它。问题是如果我有多个文件上传,我就无法使用下面的代码。

      function readURL(input) {
            if (input.files && input.files[0]) {
                var reader = new FileReader();

                reader.onload = function (e) {
                    $(".imagePreview1").css("background-image", "url("+this.result+")");
                    $("#definitionModal .image-upload").css("display" , "none");
                    $("#definitionModal .grid2").css("display" , "block");
                }

                reader.readAsDataURL(input.files[0]);
            }
        }

        $("#uploadFile1").change(function(){
            readURL(this);
        });

感谢任何帮助,以便自定义此代码,以便在同一页面上多次使用。