UEditor 第一次加载正常，第二次无法正常加载问题

提出问题

使用UEditor-1.4.3中遇到第一次跳转到使用UEditor的界面后，编辑器加载正常，返回后第二次再跳转到这个界面就出现UEditor无法正常加载，

也没百度到答案，看UEditor源码，发现这样一段：

<code class="hljs scala has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: "Source Code Pro", monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"> <span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/**
* <span class="hljs-javadoctag" style="color: rgb(102, 0, 102); box-sizing: border-box;">@file</span>
* <span class="hljs-javadoctag" style="color: rgb(102, 0, 102); box-sizing: border-box;">@name</span> UE
* <span class="hljs-javadoctag" style="color: rgb(102, 0, 102); box-sizing: border-box;">@short</span> UE
* <span class="hljs-javadoctag" style="color: rgb(102, 0, 102); box-sizing: border-box;">@desc</span> UEditor的顶部命名空间
*/</span>
<span class="hljs-javadoc" style="color: rgb(136, 0, 0); box-sizing: border-box;">/**
* <span class="hljs-javadoctag" style="color: rgb(102, 0, 102); box-sizing: border-box;">@name</span> getEditor
* <span class="hljs-javadoctag" style="color: rgb(102, 0, 102); box-sizing: border-box;">@since</span> 1.2.4+
* <span class="hljs-javadoctag" style="color: rgb(102, 0, 102); box-sizing: border-box;">@grammar</span> UE.getEditor(id,[opt])  =>  Editor实例
* <span class="hljs-javadoctag" style="color: rgb(102, 0, 102); box-sizing: border-box;">@desc</span> 提供一个全局的方法得到编辑器实例
*
* * ''id''  放置编辑器的容器id, 如果容器下的编辑器已经存在，就直接返回
* * ''opt'' 编辑器的可选参数
* <span class="hljs-javadoctag" style="color: rgb(102, 0, 102); box-sizing: border-box;">@example</span>
*  UE.getEditor('containerId',{onready:function(){//创建一个编辑器实例
*      this.setContent('hello')
*  }});
*  UE.getEditor('containerId'); //返回刚创建的实例
*
*/</span>
UE.getEditor = function (id, opt) {
<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">var</span> editor = instances[id];
<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (!editor) {
editor = instances[id] = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> UE.ui.Editor(opt);
editor.render(id);
}
<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> editor;
};

UE.delEditor = function (id) {
<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">var</span> editor;
<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (editor = instances[id]) {
editor.key && editor.destroy();
delete instances[id]
}
};</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right: 1px solid rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li><li style="box-sizing: border-box; padding: 0px 5px;">25</li><li style="box-sizing: border-box; padding: 0px 5px;">26</li><li style="box-sizing: border-box; padding: 0px 5px;">27</li><li style="box-sizing: border-box; padding: 0px 5px;">28</li><li style="box-sizing: border-box; padding: 0px 5px;">29</li><li style="box-sizing: border-box; padding: 0px 5px;">30</li><li style="box-sizing: border-box; padding: 0px 5px;">31</li><li style="box-sizing: border-box; padding: 0px 5px;">32</li><li style="box-sizing: border-box; padding: 0px 5px;">33</li><li style="box-sizing: border-box; padding: 0px 5px;">34</li><li style="box-sizing: border-box; padding: 0px 5px;">35</li><li style="box-sizing: border-box; padding: 0px 5px;">36</li><li style="box-sizing: border-box; padding: 0px 5px;">37</li><li style="box-sizing: border-box; padding: 0px 5px;">38</li></ul>

这段可以看到，在调用UE.getEditor(‘_editor’)初始化UEditor时，先从放置编辑器的容器instances中获取，没有实例才实例化一个Editor，这就是引起问题的原因。 

在第一次跳转到编辑器界面时，正常的实例化了一个新的编辑器对象，并放入instances，调用editor.render(id)渲染编辑器的DOM； 

第二次初始化时却仅从容器中取到实例：var editor = instances[id]; 直接返回了editor对象，而编辑器的DOM并没有渲染。

解决问题

用下面的方式调用：

<code class="hljs scss has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: "Source Code Pro", monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-function" style="box-sizing: border-box;">jQuery(<span class="hljs-function" style="box-sizing: border-box;">function($)</span> {
UE.<span class="hljs-function" style="box-sizing: border-box;">getEditor(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'_editor'</span>)</span>.<span class="hljs-function" style="box-sizing: border-box;">render(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'_editor'</span>)</span>
)</span>}
</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right: 1px solid rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li></ul>

也可以这样：

<code class="hljs javascript has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: "Source Code Pro", monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">jQuery(<span class="hljs-function" style="box-sizing: border-box;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">function</span><span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">($)</span> {</span>
UE.delEditor(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'_editor'</span>);
<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">var</span> ue = UE.getEditor(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'_editor'</span>);
)}</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right: 1px solid rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li></ul>

问题成功解决。希望此文对碰到这个问题的朋友有所帮助