dojo/dom-construct的create方法

create(tag,attrs,refNode,pos)

Parameter	Type	Description
tag	DOMNode | String	A string of the element to create (eg: "div","a","p","li","script","br"),or an existing DOM node to process.
attrs	Object	An object-hash of attributes to set on the newly created node. Can be null,if you don't want to set any attributes/styles. See:dojo.setAttrfor a description of available attributes.
refNode	Optional. Optional reference node. Used bydojo.placeto place the newly created node somewhere in the dom relative to refNode. Can be a DomNode reference or String ID of a node.
pos	String	Optional. Optional positional reference. Defaults to "last" by way ofdojo.place,though can be set to "first","after","before","last","replace" or "only" to further control the placement of the new node relative to the refNode. 'refNode' is required if a 'pos' is specified.yis

以上内容来自dojo1.9的api文档。

第四个参数pos的可选值有6个：first last before after replace only

前两个参数为必须的，后两个参数可选。

lz的唠叨：今天使用该method时总也得不到想要的结果，最后发现是因为页面和脚本中的id不一致。

现在想来这个问题是可以通过查看firebug中的dom解决的。其实往往犯得都是这样的小错误，以后检查时也要注意往这方面思考。