js sapn和input是同一级别元素吗？

Question

<div class="form-group col-md-4">

<label class="col-md-4 control-label" style="padding-top: 0px">商户所属机构</label>

<div class="col-md-8">

<div class="input-group">

<input type="text" class="form-control" id="messjg"

readonly="true" name="messjg"> <span

class="input-group-btn">

<button class="btn default" type="button" id="messjgbtn">

<i class="fa fa-calendar"></i>

</button>

</span>

</div>

</div>

</div>

$("#messjgbtn").click(function() {

name = this.parentNode.parentNode.childNodes[1].id;

SendDataandSetTree("#brch_tree","#qryBrch");

});

Answer 1

不是