1、实现富文本编辑器

2、实现项目排序

static/to-markdown/lib/html-parser.js

@@ -0,0 +1,76 @@
+/*
+ * Set up window for Node.js
+ */
+
+var _window = (typeof window !== 'undefined' ? window : this)
+
+/*
+ * Parsing HTML strings
+ */
+
+function canParseHtmlNatively () {
+  var Parser = _window.DOMParser
+  var canParse = false
+
+  // Adapted from https://gist.github.com/1129031
+  // Firefox/Opera/IE throw errors on unsupported types
+  try {
+    // WebKit returns null on unsupported types
+    if (new Parser().parseFromString('', 'text/html')) {
+      canParse = true
+    }
+  } catch (e) {}
+
+  return canParse
+}
+
+function createHtmlParser () {
+  var Parser = function () {}
+
+  // For Node.js environments
+  if (typeof document === 'undefined') {
+    var jsdom = require('jsdom')
+    Parser.prototype.parseFromString = function (string) {
+      return jsdom.jsdom(string, {
+        features: {
+          FetchExternalResources: [],
+          ProcessExternalResources: false
+        }
+      })
+    }
+  } else {
+    if (!shouldUseActiveX()) {
+      Parser.prototype.parseFromString = function (string) {
+        var doc = document.implementation.createHTMLDocument('')
+        doc.open()
+        doc.write(string)
+        doc.close()
+        return doc
+      }
+    } else {
+      Parser.prototype.parseFromString = function (string) {
+        var doc = new window.ActiveXObject('htmlfile')
+        doc.designMode = 'on' // disable on-page scripts
+        doc.open()
+        doc.write(string)
+        doc.close()
+        return doc
+      }
+    }
+  }
+  return Parser
+}
+
+function shouldUseActiveX () {
+  var useActiveX = false
+
+  try {
+    document.implementation.createHTMLDocument('').open()
+  } catch (e) {
+    if (window.ActiveXObject) useActiveX = true
+  }
+
+  return useActiveX
+}
+
+module.exports = canParseHtmlNatively() ? _window.DOMParser : createHtmlParser()