获取元素js点击tab，input获取当前文本，

<style>.label {cursor:pointer}</style>

<input type="text" id="textbox" size = "30" name="chaxinmd" />

<span class="label">JS特效</span>
<span class="label">C++</span>
<span class="label">SQL</span>
<span class="label">dt猫</span>





<script type="text/javascript">

spans=document.getElementsByTagName("span");
for(i=0;i<spans.length;i++)
{if(spans[i].className=="label")
{  spans[i].onclick=function()
{    document.getElementById('textbox').value=this.innerHTML; 
 }}}
 
 </script>


<style>.label {cursor:pointer}</style>



<input type="text" id="textbox" size = "30" name="chaxinmd" />
<div id="sp">
<span class="label">JS特效</span>
<span class="label">C++</span>
<span class="label">SQL</span>
<span class="label">dt猫</span>
</div>




<script type="text/javascript">
/*spans=docuemnt.getElementById("sp").getElementsByTagName("span");*/

spans=document.getElementById("sp").childNodes;  
for(i=0;i<spans.length;i++)
{if(spans[i].className=="label")
{  spans[i].onclick=function()
{    document.getElementById('textbox').value=this.innerHTML; 
 }}}
 </script>