Js get event object code

General practice:

Copy the codeThe code is as follows:

 
<input type="button" value="click me to test" />
<script type="text/javascript"> 
var testBtn = ('test'); 
 = testFun; 
function testFun(e) 
{ 
var evt = e || ; 
alert(evt); 
} 
</script> 

or:

Copy the codeThe code is as follows:

 
<input type="button" value="click me to test" />
<script type="text/javascript"> 
var testBtn = ('test'); 
if() 
{ 
('click', testFun, false); 
} 
else if() 
{ 
('onclick', testFun); 
} 
function testFun(e) 
{ 
var evt = e || ; 
alert(evt); 
} 
</script> 

The returned values are "[object Event]".
But what if this is the way?

Copy the codeThe code is as follows:

 
<input type="button" value="click me to test" onclick="testFun_1()" />
<script type="text/javascript"> 
function testFun_1() 
{ 
//How to get it here?
} 
</script> 

"If you don't decide on internal affairs, ask Baidu, and if you don't decide on external affairs, ask Google." This is true. After searching, there are quite a lot of answers, but most of them are similar (maybe coincidental).
https:///article/
/cuixiping/archive/2008/04/13/
Yugong's article (seemingly reposted) is quite insightful.

Copy the codeThe code is as follows:

 
<input type="button" value="click me to test" onclick="testFun_1()" />
<script type="text/javascript"> 
function testFun_1() 
{ 
var evt = getEvent(); 
alert(evt); 
} 
function getEvent(){ 
if() return ; //It is more appropriate to use object detection here
func=; 
while(func!=null){ 
var arg0=[0]; 
if(arg0){ 
if((==Event ||  ==MouseEvent) 
|| (typeof(arg0)=="object" &&  && )){ 
return arg0; 
} 
} 
func=; 
} 
return null; 
} 
</script> 

Generally speaking, this embedded writing method is rarely used (js is written onclick="testFun_1()" in the html tag), and it is not recommended to use this method, which will cause maintenance and development troubles.