js将HTML导出生成word文档相关js

超、凢脫俗 2022-10-07 09:49 436阅读 0赞

# 1.jquery.wordexport.js #

if (typeof jQuery !== "undefined" && typeof saveAs !== "undefined") { 
        (function ($) { 
            $.fn.wordExport = function (fileName) { 
                fileName = typeof fileName !== 'undefined' ? fileName : "jQuery-Word-Export";
                var statics = { 
                    mhtml: { 
                        top: "Mime-Version: 1.0\nContent-Base: " + location.href + "\nContent-Type: Multipart/related; boundary=\"NEXT.ITEM-BOUNDARY\";type=\"text/html\"\n\n--NEXT.ITEM-BOUNDARY\nContent-Type: text/html; charset=\"utf-8\"\nContent-Location: " + location.href + "\n\n<!DOCTYPE html>\n<html>\n_html_</html>",
                        head: "<head>\n<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">\n<style>\n_styles_\n</style>\n</head>\n",
                        body: "<body>_body_</body>"
                    }
                };
                var options = { 
                    maxWidth: 624
                };
                // Clone selected element before manipulating it
                var markup = $(this).clone();
     
                // Remove hidden elements from the output
                markup.each(function () { 
                    var self = $(this);
                    if (self.is(':hidden'))
                        self.remove();
                });
     
                // Embed all images using Data URLs
                var images = Array();
                var img = markup.find('img');
                for (var i = 0; i < img.length; i++) { 
                    // Calculate dimensions of output image
                    var w = Math.min(img[i].width, options.maxWidth);
                    var h = img[i].height * (w / img[i].width);
                    // Create canvas for converting image to data URL
                    var canvas = document.createElement("CANVAS");
                    canvas.width = w;
                    canvas.height = h;
                    // Draw image to canvas
                    var context = canvas.getContext('2d');
                    context.drawImage(img[i], 0, 0, w, h);
                    // Get data URL encoding of image
                    var uri = canvas.toDataURL("image/png/jpg");
                    $(img[i]).attr("src", img[i].src);
                    img[i].width = w;
                    img[i].height = h;
                    // Save encoded image to array
                    images[i] = { 
                        type: uri.substring(uri.indexOf(":") + 1, uri.indexOf(";")),
                        encoding: uri.substring(uri.indexOf(";") + 1, uri.indexOf(",")),
                        location: $(img[i]).attr("src"),
                        data: uri.substring(uri.indexOf(",") + 1)
                    };
                }
     
                // Prepare bottom of mhtml file with image data
                var mhtmlBottom = "\n";
                for (var i = 0; i < images.length; i++) { 
                    mhtmlBottom += "--NEXT.ITEM-BOUNDARY\n";
                    mhtmlBottom += "Content-Location: " + images[i].location + "\n";
                    mhtmlBottom += "Content-Type: " + images[i].type + "\n";
                    mhtmlBottom += "Content-Transfer-Encoding: " + images[i].encoding + "\n\n";
                    mhtmlBottom += images[i].data + "\n\n";
                }
                mhtmlBottom += "--NEXT.ITEM-BOUNDARY--";
     
                //TODO: load css from included stylesheet
     
                //var styles=' /* Font Definitions */@font-face{font-family:宋体;panose-1:2 1 6 0 3 1 1 1 1 1;mso-font-alt:SimSun;mso-font-charset:134;mso-generic-font-family:auto;mso-font-pitch:variable;mso-font-signature:3 680460288 22 0 262145 0;} @font-face{font-family:"Cambria Math";panose-1:2 4 5 3 5 4 6 3 2 4;mso-font-charset:1;mso-generic-font-family:roman;mso-font-format:other;mso-font-pitch:variable;mso-font-signature:0 0 0 0 0 0;} @font-face{font-family:"\@宋体";panose-1:2 1 6 0 3 1 1 1 1 1;mso-font-charset:134;mso-generic-font-family:auto;mso-font-pitch:variable;mso-font-signature:3 680460288 22 0 262145 0;}/* Style Definitions */p.MsoNormal, li.MsoNormal, div.MsoNormal{mso-style-unhide:no;mso-style-qformat:yes;mso-style-parent:"";margin:0cm;margin-bottom:.0001pt;mso-pagination:widow-orphan;font-size:14.0pt;font-family:宋体;mso-bidi-font-family:宋体;}p.MsoHeader, li.MsoHeader, div.MsoHeader{mso-style-noshow:yes;mso-style-priority:99;mso-style-link:"页眉 Char";margin:0cm;margin-bottom:.0001pt;text-align:center;mso-pagination:widow-orphan;layout-grid-mode:char;font-size:9.0pt;font-family:宋体;mso-bidi-font-family:宋体;}p.MsoFooter, li.MsoFooter, div.MsoFooter{mso-style-noshow:yes;mso-style-priority:99;mso-style-link:"页脚 Char";margin:0cm;margin-bottom:.0001pt;mso-pagination:widow-orphan;layout-grid-mode:char;font-size:9.0pt;font-family:宋体;mso-bidi-font-family:宋体;}p.MsoAcetate, li.MsoAcetate, div.MsoAcetate{mso-style-noshow:yes;mso-style-priority:99;mso-style-link:"批注框文本 Char";margin:0cm;margin-bottom:.0001pt;mso-pagination:widow-orphan;font-size:9.0pt;font-family:宋体;mso-bidi-font-family:宋体;}span.Char{mso-style-name:"页眉 Char";mso-style-noshow:yes;mso-style-priority:99;mso-style-unhide:no;mso-style-locked:yes;mso-style-link:页眉;font-family:宋体;mso-ascii-font-family:宋体;mso-fareast-font-family:宋体;mso-hansi-font-family:宋体;}span.Char0{mso-style-name:"页脚 Char";mso-style-noshow:yes;mso-style-priority:99;mso-style-unhide:no;mso-style-locked:yes;mso-style-link:页脚;font-family:宋体;mso-ascii-font-family:宋体;mso-fareast-font-family:宋体;mso-hansi-font-family:宋体;}span.Char1{mso-style-name:"批注框文本 Char";mso-style-noshow:yes;mso-style-priority:99;mso-style-unhide:no;mso-style-locked:yes;mso-style-link:批注框文本;font-family:宋体;mso-ascii-font-family:宋体;mso-fareast-font-family:宋体;mso-hansi-font-family:宋体;}p.msochpdefault, li.msochpdefault, div.msochpdefault{mso-style-name:msochpdefault;mso-style-unhide:no;mso-margin-top-alt:auto;margin-right:0cm;mso-margin-bottom-alt:auto;margin-left:0cm;mso-pagination:widow-orphan;font-size:10.0pt;font-family:宋体;mso-bidi-font-family:宋体;}span.msonormal0{mso-style-name:msonormal;mso-style-unhide:no;}.MsoChpDefault{mso-style-type:export-only;mso-default-props:yes;font-size:10.0pt;mso-ansi-font-size:10.0pt;mso-bidi-font-size:10.0pt;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-font-kerning:0pt;}/* Page Definitions */ @page WordSection1{size:595.3pt 841.9pt;margin:72.0pt 90.0pt 72.0pt 90.0pt;mso-header-margin:42.55pt;mso-footer-margin:49.6pt;mso-paper-source:0;}div.WordSection1{page:WordSection1;}';
     
                var styles = "";
     
                // Aggregate parts of the file together
                var fileContent = statics.mhtml.top.replace("_html_", statics.mhtml.head.replace("_styles_", styles) + statics.mhtml.body.replace("_body_", markup.html())) + mhtmlBottom;
     
                // Create a Blob with the file contents
                var blob = new Blob([fileContent], { 
                    type: "application/msword;charset=utf-8"
                });
                saveAs(blob, fileName + ".doc");
            };
        })(jQuery);
    } else { 
        if (typeof jQuery === "undefined") { 
            console.error("jQuery Word Export: missing dependency (jQuery)");
        }
        if (typeof saveAs === "undefined") { 
            console.error("jQuery Word Export: missing dependency (FileSaver.js)");
        }
    }

# 2.FileSaver.js #

/* FileSaver.js * A saveAs() FileSaver implementation. * 1.3.2 * 2016-06-16 18:25:19 * * By Eli Grey, http://eligrey.com * License: MIT * See https://github.com/eligrey/FileSaver.js/blob/master/LICENSE.md */
     
    /*global self */
    /*jslint bitwise: true, indent: 4, laxbreak: true, laxcomma: true, smarttabs: true, plusplus: true */
     
    /*! @source http://purl.eligrey.com/github/FileSaver.js/blob/master/FileSaver.js */
     
    var saveAs = saveAs || (function (view) { 
        "use strict";
        // IE <10 is explicitly unsupported
        if (typeof view === "undefined" || typeof navigator !== "undefined" && /MSIE [1-9]\./.test(navigator.userAgent)) { 
            return;
        }
        var
            doc = view.document
            // only get URL when necessary in case Blob.js hasn't overridden it yet
            , get_URL = function () { 
                return view.URL || view.webkitURL || view;
            }
            , save_link = doc.createElementNS("http://www.w3.org/1999/xhtml", "a")
            , can_use_save_link = "download" in save_link
            , click = function (node) { 
                var event = new MouseEvent("click");
                node.dispatchEvent(event);
            }
            , is_safari = /constructor/i.test(view.HTMLElement)
            , is_chrome_ios = /CriOS\/[\d]+/.test(navigator.userAgent)
            , throw_outside = function (ex) { 
                (view.setImmediate || view.setTimeout)(function () { 
                    throw ex;
                }, 0);
            }
            , force_saveable_type = "application/octet-stream"
            // the Blob API is fundamentally broken as there is no "downloadfinished" event to subscribe to
            , arbitrary_revoke_timeout = 1000 * 40 // in ms
            , revoke = function (file) { 
                var revoker = function () { 
                    if (typeof file === "string") {  // file is an object URL
                        get_URL().revokeObjectURL(file);
                    } else {  // file is a File
                        file.remove();
                    }
                };
                setTimeout(revoker, arbitrary_revoke_timeout);
            }
            , dispatch = function (filesaver, event_types, event) { 
                event_types = [].concat(event_types);
                var i = event_types.length;
                while (i--) { 
                    var listener = filesaver["on" + event_types[i]];
                    if (typeof listener === "function") { 
                        try { 
                            listener.call(filesaver, event || filesaver);
                        } catch (ex) { 
                            throw_outside(ex);
                        }
                    }
                }
            }
            , auto_bom = function (blob) { 
                // prepend BOM for UTF-8 XML and text/* types (including HTML)
                // note: your browser will automatically convert UTF-16 U+FEFF to EF BB BF
                if (/^\s*(?:text\/\S*|application\/xml|\S*\/\S*\+xml)\s*;.*charset\s*=\s*utf-8/i.test(blob.type)) { 
                    return new Blob([String.fromCharCode(0xFEFF), blob], {  type: blob.type });
                }
                return blob;
            }
            , FileSaver = function (blob, name, no_auto_bom) { 
                if (!no_auto_bom) { 
                    blob = auto_bom(blob);
                }
                // First try a.download, then web filesystem, then object URLs
                var
                    filesaver = this
                    , type = blob.type
                    , force = type === force_saveable_type
                    , object_url
                    , dispatch_all = function () { 
                        dispatch(filesaver, "writestart progress write writeend".split(" "));
                    }
                    // on any filesys errors revert to saving with object URLs
                    , fs_error = function () { 
                        if ((is_chrome_ios || (force && is_safari)) && view.FileReader) { 
                            // Safari doesn't allow downloading of blob urls
                            var reader = new FileReader();
                            reader.onloadend = function () { 
                                var url = is_chrome_ios ? reader.result : reader.result.replace(/^data:[^;]*;/, 'data:attachment/file;');
                                var popup = view.open(url, '_blank');
                                if (!popup) view.location.href = url;
                                url = undefined; // release reference before dispatching
                                filesaver.readyState = filesaver.DONE;
                                dispatch_all();
                            };
                            reader.readAsDataURL(blob);
                            filesaver.readyState = filesaver.INIT;
                            return;
                        }
                        // don't create more object URLs than needed
                        if (!object_url) { 
                            object_url = get_URL().createObjectURL(blob);
                        }
                        if (force) { 
                            view.location.href = object_url;
                        } else { 
                            var opened = view.open(object_url, "_blank");
                            if (!opened) { 
                                // Apple does not allow window.open, see https://developer.apple.com/library/safari/documentation/Tools/Conceptual/SafariExtensionGuide/WorkingwithWindowsandTabs/WorkingwithWindowsandTabs.html
                                view.location.href = object_url;
                            }
                        }
                        filesaver.readyState = filesaver.DONE;
                        dispatch_all();
                        revoke(object_url);
                    }
                    ;
                filesaver.readyState = filesaver.INIT;
     
                if (can_use_save_link) { 
                    object_url = get_URL().createObjectURL(blob);
                    setTimeout(function () { 
                        save_link.href = object_url;
                        save_link.download = name;
                        click(save_link);
                        dispatch_all();
                        revoke(object_url);
                        filesaver.readyState = filesaver.DONE;
                    });
                    return;
                }
     
                fs_error();
            }
            , FS_proto = FileSaver.prototype
            , saveAs = function (blob, name, no_auto_bom) { 
                return new FileSaver(blob, name || blob.name || "download", no_auto_bom);
            }
            ;
        // IE 10+ (native saveAs)
        if (typeof navigator !== "undefined" && navigator.msSaveOrOpenBlob) { 
            return function (blob, name, no_auto_bom) { 
                name = name || blob.name || "download";
     
                if (!no_auto_bom) { 
                    blob = auto_bom(blob);
                }
                return navigator.msSaveOrOpenBlob(blob, name);
            };
        }
     
        FS_proto.abort = function () {  };
        FS_proto.readyState = FS_proto.INIT = 0;
        FS_proto.WRITING = 1;
        FS_proto.DONE = 2;
     
        FS_proto.error =
            FS_proto.onwritestart =
            FS_proto.onprogress =
            FS_proto.onwrite =
            FS_proto.onabort =
            FS_proto.onerror =
            FS_proto.onwriteend =
            null;
     
        return saveAs;
    }(
        typeof self !== "undefined" && self
        || typeof window !== "undefined" && window
        || this.content
    ));
    // `self` is undefined in Firefox for Android content script context
    // while `this` is nsIContentFrameMessageManager
    // with an attribute `content` that corresponds to the window
     
    if (typeof module !== "undefined" && module.exports) { 
        module.exports.saveAs = saveAs;
    } else if ((typeof define !== "undefined" && define !== null) && (define.amd !== null)) { 
        define([], function () { 
            return saveAs;
        });
    }

# 3.若出现 Failed to execute ‘toDataURL’ on ‘HTMLCanvasElement’: Tainted canvases may no报错 #

Uncaught DOMException: Failed to execute 'toDataURL' on 'HTMLCanvasElement': Tainted canvases may no

修改jquery.wordexport.js源码

if (typeof jQuery !== "undefined" && typeof saveAs !== "undefined") { 
        (function ($) { 
            $.fn.wordExport = function (fileName) { 
                fileName = typeof fileName !== 'undefined' ? fileName : "jQuery-Word-Export";
                var static = { 
                    mhtml: { 
                        top: "Mime-Version: 1.0\nContent-Base: " + location.href + "\nContent-Type: Multipart/related; boundary=\"NEXT.ITEM-BOUNDARY\";type=\"text/html\"\n\n--NEXT.ITEM-BOUNDARY\nContent-Type: text/html; charset=\"utf-8\"\nContent-Location: " + location.href + "\n\n<!DOCTYPE html>\n<html>\n_html_</html>",
                        head: "<head>\n<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">\n<style>\n_styles_\n</style>\n</head>\n",
                        body: "<body>_body_</body>"
                    }
                };
                var options = { 
                    maxWidth: 624
                };
                // Clone selected element before manipulating it
                var markup = $(this).clone();
    
                // Remove hidden elements from the output
                markup.each(function () { 
                    var self = $(this);
                    if (self.is(':hidden'))
                        self.remove();
                });
    
                // Embed all images using Data URLs
                var images = Array();
                var img = markup.find('img');
                for (var i = 0; i < img.length; i++) { 
                    // Calculate dimensions of output image
                    var w = Math.min(img[i].width, options.maxWidth);
                    var h = img[i].height * (w / img[i].width);
                    // Create canvas for converting image to data URL
                    var canvas = document.createElement("CANVAS");
                    canvas.width = w;
                    canvas.height = h;
                    // Draw image to canvas
                    var context = canvas.getContext('2d');
                    img[i].setAttribute("crossOrigin",'Anonymous')
    
                    img[i].onload = function(){ //图片加载完，再draw 和 toDataURL
                        context.drawImage(img[i], 0, 0, w, h);
                        // Get data URL encoding of image
                        var uri = canvas.toDataURL("image/png/jpg");
                        $(img[i]).attr("src", img[i].src);
                        img[i].width = w;
                        img[i].height = h;
                        // Save encoded image to array
                        images[i] = { 
                            type: uri.substring(uri.indexOf(":") + 1, uri.indexOf(";")),
                            encoding: uri.substring(uri.indexOf(";") + 1, uri.indexOf(",")),
                            location: $(img[i]).attr("src"),
                            data: uri.substring(uri.indexOf(",") + 1)
                        };
                    };
    
                }
    
                // Prepare bottom of mhtml file with image data
                var mhtmlBottom = "\n";
                for (var i = 0; i < images.length; i++) { 
                    mhtmlBottom += "--NEXT.ITEM-BOUNDARY\n";
                    mhtmlBottom += "Content-Location: " + images[i].location + "\n";
                    mhtmlBottom += "Content-Type: " + images[i].type + "\n";
                    mhtmlBottom += "Content-Transfer-Encoding: " + images[i].encoding + "\n\n";
                    mhtmlBottom += images[i].data + "\n\n";
                }
                mhtmlBottom += "--NEXT.ITEM-BOUNDARY--";
    
                //TODO: load css from included stylesheet
    
                //var styles=' /* Font Definitions */@font-face{font-family:宋体;panose-1:2 1 6 0 3 1 1 1 1 1;mso-font-alt:SimSun;mso-font-charset:134;mso-generic-font-family:auto;mso-font-pitch:variable;mso-font-signature:3 680460288 22 0 262145 0;} @font-face{font-family:"Cambria Math";panose-1:2 4 5 3 5 4 6 3 2 4;mso-font-charset:1;mso-generic-font-family:roman;mso-font-format:other;mso-font-pitch:variable;mso-font-signature:0 0 0 0 0 0;} @font-face{font-family:"\@宋体";panose-1:2 1 6 0 3 1 1 1 1 1;mso-font-charset:134;mso-generic-font-family:auto;mso-font-pitch:variable;mso-font-signature:3 680460288 22 0 262145 0;}/* Style Definitions */p.MsoNormal, li.MsoNormal, div.MsoNormal{mso-style-unhide:no;mso-style-qformat:yes;mso-style-parent:"";margin:0cm;margin-bottom:.0001pt;mso-pagination:widow-orphan;font-size:14.0pt;font-family:宋体;mso-bidi-font-family:宋体;}p.MsoHeader, li.MsoHeader, div.MsoHeader{mso-style-noshow:yes;mso-style-priority:99;mso-style-link:"页眉 Char";margin:0cm;margin-bottom:.0001pt;text-align:center;mso-pagination:widow-orphan;layout-grid-mode:char;font-size:9.0pt;font-family:宋体;mso-bidi-font-family:宋体;}p.MsoFooter, li.MsoFooter, div.MsoFooter{mso-style-noshow:yes;mso-style-priority:99;mso-style-link:"页脚 Char";margin:0cm;margin-bottom:.0001pt;mso-pagination:widow-orphan;layout-grid-mode:char;font-size:9.0pt;font-family:宋体;mso-bidi-font-family:宋体;}p.MsoAcetate, li.MsoAcetate, div.MsoAcetate{mso-style-noshow:yes;mso-style-priority:99;mso-style-link:"批注框文本 Char";margin:0cm;margin-bottom:.0001pt;mso-pagination:widow-orphan;font-size:9.0pt;font-family:宋体;mso-bidi-font-family:宋体;}span.Char{mso-style-name:"页眉 Char";mso-style-noshow:yes;mso-style-priority:99;mso-style-unhide:no;mso-style-locked:yes;mso-style-link:页眉;font-family:宋体;mso-ascii-font-family:宋体;mso-fareast-font-family:宋体;mso-hansi-font-family:宋体;}span.Char0{mso-style-name:"页脚 Char";mso-style-noshow:yes;mso-style-priority:99;mso-style-unhide:no;mso-style-locked:yes;mso-style-link:页脚;font-family:宋体;mso-ascii-font-family:宋体;mso-fareast-font-family:宋体;mso-hansi-font-family:宋体;}span.Char1{mso-style-name:"批注框文本 Char";mso-style-noshow:yes;mso-style-priority:99;mso-style-unhide:no;mso-style-locked:yes;mso-style-link:批注框文本;font-family:宋体;mso-ascii-font-family:宋体;mso-fareast-font-family:宋体;mso-hansi-font-family:宋体;}p.msochpdefault, li.msochpdefault, div.msochpdefault{mso-style-name:msochpdefault;mso-style-unhide:no;mso-margin-top-alt:auto;margin-right:0cm;mso-margin-bottom-alt:auto;margin-left:0cm;mso-pagination:widow-orphan;font-size:10.0pt;font-family:宋体;mso-bidi-font-family:宋体;}span.msonormal0{mso-style-name:msonormal;mso-style-unhide:no;}.MsoChpDefault{mso-style-type:export-only;mso-default-props:yes;font-size:10.0pt;mso-ansi-font-size:10.0pt;mso-bidi-font-size:10.0pt;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-font-kerning:0pt;}/* Page Definitions */ @page WordSection1{size:595.3pt 841.9pt;margin:72.0pt 90.0pt 72.0pt 90.0pt;mso-header-margin:42.55pt;mso-footer-margin:49.6pt;mso-paper-source:0;}div.WordSection1{page:WordSection1;}';
    
                var styles = "";
    
                // Aggregate parts of the file together
                var fileContent = static.mhtml.top.replace("_html_", static.mhtml.head.replace("_styles_", styles) + static.mhtml.body.replace("_body_", markup.html())) + mhtmlBottom;
    
                // Create a Blob with the file contents
                var blob = new Blob([fileContent], { 
                    type: "application/msword;charset=utf-8"
                });
                saveAs(blob, fileName + ".doc");
            };
        })(jQuery);
    } else { 
        if (typeof jQuery === "undefined") { 
            console.error("jQuery Word Export: missing dependency (jQuery)");
        }
        if (typeof saveAs === "undefined") { 
            console.error("jQuery Word Export: missing dependency (FileSaver.js)");
        }
    }