ckeditor一键排版功能实现方法分析

https://www.jb51.net/article/179679.htm

<script src="https://cdn.jsdelivr.net/npm/ckeditor-full@4.7.3/ckeditor.js"></script> CKEDITOR.plugins.addExternal('autoformat', '/static/ckeditor/myplugins/autoformat/', 'plugin.js'); var editor = CKEDITOR.replace(this.$el, { customConfig: '/static/ckeditor/config.js', extraPlugins: 'autoformat' });

config.js

CKEDITOR.editorConfig = function(config) { config.extraPlugins = "autoformart"; };

plugin.js

(function() { CKEDITOR.plugins.add("autoformat", { init: function(a) { a.addCommand( "autoformat", CKEDITOR.plugins.autoformat.commands.autoformat ); a.ui.addButton("autoformat", { label: "一键排版", command: "autoformat", icon: this.path + "images/autoformat.png" }); } }); CKEDITOR.plugins.autoformat = { commands: { autoformat: { exec: function(editor) { formatText(editor); } } } }; //格式化 function formatText(editor) { var myeditor = editor; if (myeditor.mode == "wysiwyg") { var tempimg = new Array(); var temptable = new Array(); var tempobject = new Array(); var isPart = false; //暂时无法实现局部格式化 if (!isPart) { var tmpDiv = document.createElement("DIV"); var editorhtml = myeditor.getData(); editorhtml = editorhtml.replace( /<div>\s*<span>&nbsp;<\/span>\s*<\/div>/gi, "<p>[ page]</p>" ); //将div span标签替换为p 标签 tmpDiv.innerHTML = editorhtml .replace(/&nbsp;/gi, "") .replace(/<div/gi, "<p") .replace(/<\/div/gi, "</p"); //移除空格标签，div替换为p标签。 if ( window.navigator.userAgent.toLowerCase().indexOf("msie") > 0 ) { tmpDiv.innerHTML = tmpDiv.innerHTML.replace( /<\/p>/gi, "<br /></p>" ); //每个段落相隔一行 } var tables = tmpDiv.getElementsByTagName("TABLE"); if (tables != null && tables.length > 0) { for (var j = 0; j < tables.length; j++) { temptable[temptable.length] = tables[j].outerHTML; } var formattableCount = 0; for (var j = 0; j < tables.length; ) { tables[j].outerHTML = "#FormatTableID_" + formattableCount + "#"; formattableCount++; } } var objects = tmpDiv.getElementsByTagName("OBJECT"); if (objects != null && objects.length > 0) { for (var j = 0; j < objects.length; j++) { tempobject[tempobject.length] = objects[j].outerHTML; } var formatobjectCount = 0; for (var j = 0; j < objects.length; ) { objects[j].outerHTML = "#FormatObjectID_" + formatobjectCount + "#"; formatobjectCount++; } } var imgs = tmpDiv.getElementsByTagName("IMG"); if (imgs != null && imgs.length > 0) { for (var j = 0; j < imgs.length; j++) { var t = document.createElement("IMG"); t.alt = imgs[j].alt; t.src = imgs[j].src; t.width = imgs[j].width; t.height = imgs[j].height; t.align = imgs[j].align; tempimg[tempimg.length] = t; } var formatImgCount = 0; for (var j = 0; j < imgs.length; ) { imgs[j].outerHTML = "#FormatImgID_" + formatImgCount + "#"; formatImgCount++; } } var strongarray = new Array(); var strongcount = 0; for ( var i = 0; i < tmpDiv.getElementsByTagName("b").length; i++ ) { strongarray[strongcount] = tmpDiv .getElementsByTagName("b") [i].innerText.trim(); tmpDiv.getElementsByTagName("b")[i].innerHTML = "#FormatStrongID_" + strongcount + "#"; strongcount++; } for ( var i = 0; i < tmpDiv.getElementsByTagName("strong").length; i++ ) { strongarray[strongcount] = tmpDiv .getElementsByTagName("strong") [i].innerText.trim(); tmpDiv.getElementsByTagName("strong")[i].innerHTML = "#FormatStrongID_" + strongcount + "#"; strongcount++; } var html = processFormatText(tmpDiv.innerText); html = html.replace( /<p>\[ page\]<\/p>/gi, '<div><span>&nbsp;</span></div>' ); //p标签替换回原来的div和span标签。 if (temptable != null && temptable.length > 0) { for (var j = 0; j < temptable.length; j++) { var tablehtml = temptable[j]; html = html.replace( "#FormatTableID_" + j + "#", tablehtml ); } } if (tempobject != null && tempobject.length > 0) { for (var j = 0; j < tempobject.length; j++) { var objecthtml = '<p>' + tempobject[j] + "</p>"; html = html.replace( "#FormatObjectID_" + j + "#", objecthtml ); } } if (tempimg != null && tempimg.length > 0) { for (var j = 0; j < tempimg.length; j++) { var imgheight = ""; var imgwidth = ""; if (tempimg[j].height != 0) imgheight = ''; if (tempimg[j].width != 0) imgwidth = ''; var imgalign = ""; if (tempimg[j].align != "") imgalign = ''; var imghtml = '<p><img src="' + tempimg[j].src + '" alt="' + tempimg[j].alt + '"' + imgwidth + " " + imgheight + '></p>'; html = html.replace("#FormatImgID_" + j + "#", imghtml); } } for (var i = 0; i < strongcount; i++) { html = html.replace( "#FormatStrongID_" + i + "#", "<p><strong>" + strongarray[i] + "</strong></p>" ); } while (html.indexOf("</p></p>") != -1) html = html.replace("</p></p>", "</p>"); while (html.indexOf('<p><p>') != -1) html = html.replace( '<p><p>', '<p>' ); editor.setData(html); } else { } } else { alert("必须在设计模式下操作！"); } } function processFormatText(textContext) { var text = dbc2Sbc(textContext); var prefix = ""; var tmps = text.split("\n"); var html = ""; for (var i = 0; i < tmps.length; i++) { var tmp = tmps[i].trim(); if (tmp.length > 0) { var reg = /#Format[A-Za-z]+_\d+#/gi; var f = reg.exec(tmp); if (f != null) { tmp = tmp.replace(/#Format[A-Za-z]+_\d+#/gi, ""); html += f; if (tmp != "") html += '<p>' + tmp + "</p>\n"; } else { html += "<p>" + tmp + "</p>\n"; } } } return html; } function dbc2Sbc(str) { var result = ""; for (var i = 0; i < str.length; i++) { var code = str.charCodeAt(i); // “65281”是“！”，“65373”是“｝”，“65292”是“，”。不转换"，" if ( code >= 65281 && code < 65373 && code != 65292 && code != 65306 ) { // “65248”是转换码距 result += String.fromCharCode(str.charCodeAt(i) - 65248); } else { result += str.charAt(i); } } return result; } String.prototype.trim = function() { return this.replace(/(^[\s　]*)|([\s　]*$)/g, ""); }; String.prototype.leftTrim = function() { return this.replace(/(^\s*)/g, ""); }; String.prototype.rightTrim = function() { return this.replace(/(\s*$)/g, ""); }; })();