ckeditor一键排版功能实现方法分析

<script src="/UploadFiles/2021-04-02/ckeditor.js">


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 style="page-break-after: always;">\s*<span style="display: none;">&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 style="page-break-after: always;"><span style="display: none;">&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 align="center">' + 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 = ' height="' + tempimg[j].height + '"';
            if (tempimg[j].width != 0)
              imgwidth = ' width="' + tempimg[j].width + '"';
            var imgalign = "";
            if (tempimg[j].align != "")
              imgalign = ' align="' + tempimg[j].align + '"';
            var imghtml =
              '<p align="center"><img src="/UploadFiles/2021-04-02/' +
              tempimg[j].src +
              '">

希望本文所述对大家CKEDitor富文本编辑器开发有所帮助。