圖片批量上傳js+html+css

Heier 發布于2019-08-30 11:06 / 1331人閱讀

摘要：上傳成功后可以進行業務的下一步操作，自己根據業務寫吧后臺代碼接收前端的文件數據添加圖例開始添加圖例結束該圖例名稱已經存在高級基本自定義添加成功添加失敗再往后和數據庫的交互我就不寫了小菜一枚，不正確之處請批評指正

如題，圖片批量上傳，效果如圖所示

上代碼
HTML




    
     
    
    jquery多文件上傳插件
    
    
    
    
    
    


    
    
        
            jquery多文件上傳插件效果演示
        
        
            
                
                    請選擇文件

jquery.imageuploader.js

/*
 * ??2016 Quicken Loans Inc. All rights reserved.
 */
/* global jQuery FormData FileReader */
(function ($) {
    $.fn.uploader = function (options, testMode) {
        return this.each(function (index) {
            options = $.extend({
                submitButtonCopy: "上傳選定的文件",
                instructionsCopy: "支持拖放",
                furtherInstructionsCopy: "你也可以刪除文件",
                selectButtonCopy: "選擇文件",
                secondarySelectButtonCopy: "選擇多個文件",
                dropZone: $(this),
                fileTypeWhiteList: ["jpg", "png", "jpeg", "gif", "pdf"],
                badFileTypeMessage: "對不起，我們不能接受這種類型的文件。",
                ajaxUrl: "/images/add",
                testMode: false
            }, options);

            var state = {
                fileBatch: [],
                isUploading: false,
                isOverLimit: false,
                listIndex: 0
            };

            // create DOM elements
            var dom = {
                uploaderBox: $(this),
                submitButton: $(""),
                instructions: $("" +
                    options.instructionsCopy + ""),
                selectButton: $("" +
                    "" +
                    options.selectButtonCopy + ""),
                secondarySelectButton: $("" +
                    "" +
                    options.secondarySelectButtonCopy + ""),
                fileList: $(""),
                contentsContainer: $(""),
                furtherInstructions: $("" + options.furtherInstructionsCopy + "")
            };

            // empty out whatever is in there
            dom.uploaderBox.empty();

            // create and attach UI elements
            setupDOM(dom);

            // set up event handling
            bindUIEvents();

            function setupDOM (dom) {
                dom.contentsContainer
                    .append(dom.instructions)
                    .append(dom.selectButton);
                dom.furtherInstructions
                    .append(dom.secondarySelectButton);
                dom.uploaderBox
                    .append(dom.fileList)
                    .append(dom.contentsContainer)
                    .append(dom.submitButton)
                    .after(dom.furtherInstructions);
            }

            function bindUIEvents () {
                // handle drag and drop
                options.dropZone.on("dragover dragleave", function (e) {
                    e.preventDefault();
                    e.stopPropagation();
                });
                $.event.props.push("dataTransfer"); // jquery bug hack
                options.dropZone.on("drop", selectFilesHandler);

                // hack for being able selecting the same file name twice
                dom.selectButton.on("click", function () { this.value = null; });
                dom.selectButton.on("change", selectFilesHandler);
                dom.secondarySelectButton.on("click", function () { this.value = null; });
                dom.secondarySelectButton.on("change", selectFilesHandler);

                // handle the submit click
                dom.submitButton.on("click", uploadSubmitHandler);

                // remove link handler
                dom.uploaderBox.on("click", ".js-upload-remove-button", removeItemHandler);

                // expose handlers for testing
                if (options.testMode) {
                    options.dropZone.on("uploaderTestEvent", function (e) {
                        switch (e.functionName) {
                        case "selectFilesHandler":
                            selectFilesHandler(e);
                            break;
                        case "uploadSubmitHandler":
                            uploadSubmitHandler(e);
                            break;
                        default:
                            break;
                        }
                    });
                }
            }

            function addItem (file) {
                //var fileName = cleanName(file.name);
                var fileName = file.name;
                var fileSize = file.size;
                var id = state.listIndex;
                var sizeWrapper;
                var fileNameWrapper = $("" + fileName + "");

                state.listIndex++;

                var listItem = $("");
                var thumbnailContainer = $("");
                var thumbnail = $("");
                var removeLink = $("");
                // validate the file
                if (options.fileTypeWhiteList.indexOf(getExtension(file.name).toLowerCase()) !== -1) {
                    // file is ok, add it to the batch
                    state.fileBatch.push({file: file, id: id, fileName: fileName, fileSize: fileSize, groups:groups});
                    sizeWrapper = $("" + formatBytes(fileSize) + "");
                } else {
                    // file is not ok, only add it to the dom
                    sizeWrapper = $("" + options.badFileTypeMessage + "");
                }

                // create the thumbnail, if you can
                if (window.FileReader && file.type.indexOf("image") !== -1) {
                    var reader = new FileReader();
                    reader.onloadend = function () {
                        thumbnail.attr("src", reader.result);
                        thumbnail.parent().find("i").remove();
                    };
                    reader.onerror = function () {
                        thumbnail.remove();
                    };
                    reader.readAsDataURL(file);
                } else if (file.type.indexOf("image") === -1) {
                    thumbnail = $("");
                }

                thumbnailContainer.append(thumbnail);
                listItem.append(thumbnailContainer);

                listItem
                    .append(fileNameWrapper)
                    .append(sizeWrapper)
                    .append(removeLink);

                dom.fileList.append(listItem);
            }

            function getExtension (path) {
                var basename = path.split(/[/]/).pop();
                var pos = basename.lastIndexOf(".");

                if (basename === "" || pos < 1) {
                    return "";
                }
                return basename.slice(pos + 1);
            }

            function formatBytes (bytes, decimals) {
                if (bytes === 0) return "0 Bytes";
                var k = 1024;
                var dm = decimals + 1 || 3;
                var sizes = ["Bytes", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"];
                var i = Math.floor(Math.log(bytes) / Math.log(k));
                return (bytes / Math.pow(k, i)).toPrecision(dm) + " " + sizes[i];
            }

            function cleanName (name) {
                name = name.replace(/s+/gi, "-"); // Replace white space with dash
                return name.replace(/[^a-zA-Z0-9.-]/gi, ""); // Strip any special characters
            }

            function uploadSubmitHandler () {
                if (state.fileBatch.length !== 0) {
                    var groups = $("#groups option:selected").val();
                    var data = new FormData();
                    for (var i = 0; i < state.fileBatch.length; i++) {
                        //data.append("files[]", state.fileBatch[i].file, groups+state.fileBatch[i].fileName);
                        data.append("files[]", state.fileBatch[i].file);
                    }
                    data.append("group", groups);
                    $.ajax({
                        type: "POST",
                        url: options.ajaxUrl,
                        data:data,
                        cache: false,
                        contentType: false,
                        /*enctype: "multipart/form-data",*/
                        processData: false,
                        success : function(result) {
                            //上傳成功后可以進行業務的下一步操作，自己根據業務寫吧
                        }
                    });
                }
            }

            function selectFilesHandler (e) {
                e.preventDefault();
                e.stopPropagation();

                if (!state.isUploading) {
                    // files come from the input or a drop
                    var files = e.target.files || e.dataTransfer.files || e.dataTransfer.getData;

                    // process each incoming file
                    for (var i = 0; i < files.length; i++) {
                        addItem(files[i]);
                    }
                }
                renderControls();
            }

            function renderControls () {
                if (dom.fileList.children().size() !== 0) {
                    dom.submitButton.removeClass("uploader__hide");
                    dom.furtherInstructions.removeClass("uploader__hide");
                    dom.contentsContainer.addClass("uploader__hide");
                } else {
                    dom.submitButton.addClass("uploader__hide");
                    dom.furtherInstructions.addClass("uploader__hide");
                    dom.contentsContainer.removeClass("uploader__hide");
                }
            }

            function removeItemHandler (e) {
                e.preventDefault();

                if (!state.isUploading) {
                    var removeIndex = $(e.target).data("index");
                    removeItem(removeIndex);
                    $(e.target).parent().remove();
                }

                renderControls();
            }

            function removeItem (id) {
                // remove from the batch
                for (var i = 0; i < state.fileBatch.length; i++) {
                    if (state.fileBatch[i].id === parseInt(id)) {
                        state.fileBatch.splice(i, 1);
                        break;
                    }
                }
                // remove from the DOM
                dom.fileList.find("li[data-index="" + id + ""]").remove();
            }
        });
    };
}(jQuery));

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圖片批量上傳js+html+css

jquery多文件上傳插件效果演示

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