kindeditor修复会替换script内容的问题_javascript技巧

function _formatHtml(html, htmlTags, urlType, wellFormatted, indentChar) {
    if (html == null) {
      html = '';
    }
    //2015-03-25
    html = html.replace(/textarea__/ig, "textarea");
    urlType = urlType || '';
    wellFormatted = _undef(wellFormatted, false);
    indentChar = _undef(indentChar, '\t');
    var fontSizeList = 'xx-small,x-small,small,medium,large,x-large,xx-large'.split(',');
 
    //2015-04-02将script里面的数据读取处理
    var obj = {};
    var index = 0;
    html = html.replace(/(<script\s[^>]*>)([\s\S]*&#63;)(<\/script>)/ig, function ($0, $1, $2, $3) {
      var value = $2 + '';
      if (value) {
        var key = "{$script__" + index + "$}";
        obj[key] = value;
        index++;
        return $1 + key + $3;
      } else {
        return $0;
      }
    });
    html = html.replace(/(<(&#63;:pre|pre\s[^>]*)>)([\s\S]*&#63;)(<\/pre>)/ig, function ($0, $1, $2, $3) {
      return $1 + $2.replace(/<(&#63;:br|br\s[^>]*)>/ig, '\n') + $3;
    });
    html = html.replace(/<(&#63;:br|br\s[^>]*)\s*\/&#63;>\s*<\/p>/ig, '</p>');
    html = html.replace(/(<(&#63;:p|p\s[^>]*)>)\s*(<\/p>)/ig, '$1<br />$2');
    html = html.replace(/\u200B/g, '');
    html = html.replace(/\u00A9/g, '&copy;');
    html = html.replace(/\u00AE/g, '&reg;');
    html = html.replace(/<[^>]+/g, function ($0) {
      return $0.replace(/\s+/g, ' ');
    });
    var htmlTagMap = {};
    if (htmlTags) {
      _each(htmlTags, function (key, val) {
        var arr = key.split(',');
        for (var i = 0, len = arr.length; i < len; i++) {
          htmlTagMap[arr[i]] = _toMap(val);
        }
      });
      if (!htmlTagMap.script) {
        html = html.replace(/(<(&#63;:script|script\s[^>]*)>)([\s\S]*&#63;)(<\/script>)/ig, '');
      }
      if (!htmlTagMap.style) {
        html = html.replace(/(<(&#63;:style|style\s[^>]*)>)([\s\S]*&#63;)(<\/style>)/ig, '');
      }
    }
    var re = /(\s*)<(\/)&#63;([\w\-:]+)((&#63;:\s+|(&#63;:\s+[\w\-:]+)|(&#63;:\s+[\w\-:]+=[^\s"'<>]+)|(&#63;:\s+[\w\-:"]+="[^"]*")|(&#63;:\s+[\w\-:"]+='[^']*'))*)(\/)&#63;>(\s*)/g;
    var tagStack = [];
    html = html.replace(re, function ($0, $1, $2, $3, $4, $5, $6) {
      var full = $0,
      startNewline = $1 || '',
      startSlash = $2 || '',
      tagName = $3.toLowerCase(),
      attr = $4 || '',
      endSlash = $5 &#63; ' ' + $5 : '',
      endNewline = $6 || '';
      if (htmlTags && !htmlTagMap[tagName]) {
        return '';
      }
      if (endSlash === '' && _SINGLE_TAG_MAP[tagName]) {
        endSlash = ' /';
      }
      if (_INLINE_TAG_MAP[tagName]) {
        if (startNewline) {
          startNewline = ' ';
        }
        if (endNewline) {
          endNewline = ' ';
        }
      }
      if (_PRE_TAG_MAP[tagName]) {
        if (startSlash) {
          endNewline = '\n';
        } else {
          startNewline = '\n';
        }
      }
      if (wellFormatted && tagName == 'br') {
        endNewline = '\n';
      }
      if (_BLOCK_TAG_MAP[tagName] && !_PRE_TAG_MAP[tagName]) {
        if (wellFormatted) {
          if (startSlash && tagStack.length > 0 && tagStack[tagStack.length - 1] === tagName) {
            tagStack.pop();
          } else {
            tagStack.push(tagName);
          }
          startNewline = '\n';
          endNewline = '\n';
          for (var i = 0, len = startSlash &#63; tagStack.length : tagStack.length - 1; i < len; i++) {
            startNewline += indentChar;
            if (!startSlash) {
              endNewline += indentChar;
            }
          }
          if (endSlash) {
            tagStack.pop();
          } else if (!startSlash) {
            endNewline += indentChar;
          }
        } else {
          startNewline = endNewline = '';
        }
      }
      if (attr !== '') {
        var attrMap = _getAttrList(full);
        if (tagName === 'font') {
          var fontStyleMap = {}, fontStyle = '';
          _each(attrMap, function (key, val) {
            if (key === 'color') {
              fontStyleMap.color = val;
              delete attrMap[key];
            }
            if (key === 'size') {
              fontStyleMap['font-size'] = fontSizeList[parseInt(val, 10) - 1] || '';
              delete attrMap[key];
            }
            if (key === 'face') {
              fontStyleMap['font-family'] = val;
              delete attrMap[key];
            }
            if (key === 'style') {
              fontStyle = val;
            }
          });
          if (fontStyle && !/;$/.test(fontStyle)) {
            fontStyle += ';';
          }
          _each(fontStyleMap, function (key, val) {
            if (val === '') {
              return;
            }
            if (/\s/.test(val)) {
              val = "'" + val + "'";
            }
            fontStyle += key + ':' + val + ';';
          });
          attrMap.style = fontStyle;
        }
        _each(attrMap, function (key, val) {
          if (_FILL_ATTR_MAP[key]) {
            attrMap[key] = key;
          }
          if (_inArray(key, ['src', 'href']) >= 0) {
            attrMap[key] = _formatUrl(val, urlType);
          }
          if (htmlTags && key !== 'style' && !htmlTagMap[tagName]['*'] && !htmlTagMap[tagName][key] ||
          tagName === 'body' && key === 'contenteditable' ||
          /^kindeditor_\d+$/.test(key)) {
            delete attrMap[key];
          }
          if (key === 'style' && val !== '') {
            var styleMap = _getCssList(val);
            _each(styleMap, function (k, v) {
              if (htmlTags && !htmlTagMap[tagName].style && !htmlTagMap[tagName]['.' + k]) {
                delete styleMap[k];
              }
            });
            var style = '';
            _each(styleMap, function (k, v) {
              style += k + ':' + v + ';';
            });
            attrMap.style = style;
          }
        });
        attr = '';
        _each(attrMap, function (key, val) {
          if (key === 'style' && val === '') {
            return;
          }
          val = val.replace(/"/g, '"');
          attr += ' ' + key + '="' + val + '"';
        });
      }
      if (tagName === 'font') {
        tagName = 'span';
      }
      return startNewline + '<' + startSlash + tagName + attr + endSlash + '>' + endNewline;
    });
    html = html.replace(/(<(&#63;:pre|pre\s[^>]*)>)([\s\S]*&#63;)(<\/pre>)/ig, function ($0, $1, $2, $3) {
      return $1 + $2.replace(/\n/g, '<span id="__kindeditor_pre_newline__">\n') + $3;
    });
    html = html.replace(/\n\s*\n/g, '\n');
    html = html.replace(/<span id="__kindeditor_pre_newline__">\n/g, '\n');
    for (var key in obj) {
      html = html.replace(key, obj[key]);
    }
    //alert(html);
    return _trim(html);
  }