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addEventListener


Matej
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Hello gentlemen.

 

Im trying to understand addEventListener and i came to this script

 

<p id="lol" > hello world </p>

 

var g=document.getElementById("lol");g.addEventListener("click",myfunction(){alert(event.target);},false); 

 

but it does not work , i tried it with "true"(altought im not quite suire if i understand when to use false /true).

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The problem is here: myfunction(){alert(event.target);}

 

To declare an anonymous function you use the function keyword. Simply function(){alert(event.target);}

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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"/><title>title</title><style>#lol{cursor:pointer;color:purple;}</style><script>window.onerror = function(m,u,n){alert('Javascript Error: '+m+'nURL: '+u+'nLine Number: '+n)}</script><script>window.onload = function(){document.getElementById("lol").addEventListener("click",function(e){alert('id: '+ e.target.id +'nelement: '+e.target.tagName +'ninnerHTML: '+e.target.innerHTML);},false);}</script></head><body><p id="lol">hello world</p></body></html>
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I don't seem to be able to replace...

window.onerror = function(m,u,n){alert('Javascript Error: '+m+'nURL: '+u+'nLine Number: '+n)}

...with...

window.addEventListener("error",function(m,u,n){alert('Javascript Error: '+m+'nURL: '+u+'nLine Number: '+n)},false);
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Are the error arguments standard?

 

Under the W3C model event handlers should take just one parameter that holds data about the event. This possibly also applies to the error event.

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