event.srcElement从字面上可以看出来有以下关键字:事件,源 它的意思就是:当前事件的源,
我们可以调用它的各种属性 就像:document.getElementById("")这样的功能,
经常有人问 firefox 下的 event.srcElement 怎么用,在此详细说明:
IE下,event对象有srcElement属性,但是没有target属性;Firefox下,event对象有target属性,但是没有srcElement属性.但他们的作用是相当的,即:
firefox 下的 event.target = IE 下的 event.srcElement
解决方法:使用obj(obj = event.srcElement ? event.srcElement : event.target;)来代替IE下的event.srcElement或者Firefox下的event.target.
以下是几种常见到的情况(IE下测试通过,如要测试firefox下的event.target可以修改并保存代码后用firefox打开测试):
event.srcElement.X显示一个控件的各种属性
<div id="div_001">
<form id="form_001">
<input type="button" id="button_001_id" name="button_001_Name" value="单击查看" class="button_001_Class" onclick="Get_srcElement(this)">
</form>
</div>
<script type="text/javascript">
function Get_srcElement()
{
var srcElement=""
srcElement = srcElement + " " + "event.srcElement.id : " + event.srcElement.id
srcElement = srcElement + " " + "event.srcElement.tagName : " + event.srcElement.tagName
srcElement = srcElement + " " + "event.srcElement.type : " + event.srcElement.type
srcElement = srcElement + " " + "event.srcElement.value : " + event.srcElement.value
srcElement = srcElement + " " + "event.srcElement.name : " + event.srcElement.name
srcElement = srcElement + " " + "event.srcElement.className : " + event.srcElement.className
srcElement = srcElement + " " + "event.srcElement.parentElement.id : " + event.srcElement.parentElement.id
srcElement = srcElement + " " + "event.srcElement.getattribute : " + event.srcElement.getAttribute
alert(srcElement)
}
</script>
<form id="form_001">
<input type="button" id="button_001_id" name="button_001_Name" value="单击查看" class="button_001_Class" onclick="Get_srcElement(this)">
</form>
</div>
<script type="text/javascript">
function Get_srcElement()
{
var srcElement=""
srcElement = srcElement + " " + "event.srcElement.id : " + event.srcElement.id
srcElement = srcElement + " " + "event.srcElement.tagName : " + event.srcElement.tagName
srcElement = srcElement + " " + "event.srcElement.type : " + event.srcElement.type
srcElement = srcElement + " " + "event.srcElement.value : " + event.srcElement.value
srcElement = srcElement + " " + "event.srcElement.name : " + event.srcElement.name
srcElement = srcElement + " " + "event.srcElement.className : " + event.srcElement.className
srcElement = srcElement + " " + "event.srcElement.parentElement.id : " + event.srcElement.parentElement.id
srcElement = srcElement + " " + "event.srcElement.getattribute : " + event.srcElement.getAttribute
alert(srcElement)
}
</script>
event.srcElement.selectedIndex一般使用在select对象上:
<select name="selectname" onchange="alert(event.srcElement.options[event.srcElement.selectedIndex].value)" >
<option value="001">1</option>
<option value="002">2</option>
<option value="003">3</option>
<option value="004">4</option>
<option value="005">5</option>
</select>
<option value="001">1</option>
<option value="002">2</option>
<option value="003">3</option>
<option value="004">4</option>
<option value="005">5</option>
</select>
第一个子标签为
event.srcElement.firstChild
最后一个子标签是
event.srcElement.lastChild
当然也可以用
event.srcElement.children[i]
event.srcElement.childNode[i]
至于event.srcElement.parentElement是指在鼠标所在对象的上一个对象.
<div onclick="Get_srcElement()">
<div id="001" style="border:1px solid red;100%;height:500px"> <span id="node001">这是第1结点div001<span>
<div id="002" style="border:1px solid red;80%;height:300px"> <span id="node002">这是第2结点div002<span>
<div id="003" style="border:1px solid red;50%;height:200px"> <span id="node003">这是第3结点div003<span>
</div>
<div id="004" style="border:1px solid red;50%;height:200px"> <span id="node003">这是第3结点div004<span>
</div>
</div>
</div>
<script type="text/javascript">
function Get_srcElement()
{
var srcElement=""
srcElement = srcElement + " " + "event.srcElement.children[0].tagName: " + event.srcElement.children[0].tagName
srcElement = srcElement + " " + "event.srcElement.firstChild.id : " + event.srcElement.firstChild.id
srcElement = srcElement + " " + "event.srcElement.lastChild.id : " + event.srcElement.lastChild.id
alert(srcElement)
}
</script>
</div>
<div id="001" style="border:1px solid red;100%;height:500px"> <span id="node001">这是第1结点div001<span>
<div id="002" style="border:1px solid red;80%;height:300px"> <span id="node002">这是第2结点div002<span>
<div id="003" style="border:1px solid red;50%;height:200px"> <span id="node003">这是第3结点div003<span>
</div>
<div id="004" style="border:1px solid red;50%;height:200px"> <span id="node003">这是第3结点div004<span>
</div>
</div>
</div>
<script type="text/javascript">
function Get_srcElement()
{
var srcElement=""
srcElement = srcElement + " " + "event.srcElement.children[0].tagName: " + event.srcElement.children[0].tagName
srcElement = srcElement + " " + "event.srcElement.firstChild.id : " + event.srcElement.firstChild.id
srcElement = srcElement + " " + "event.srcElement.lastChild.id : " + event.srcElement.lastChild.id
alert(srcElement)
}
</script>
</div>