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capture button used to submit form

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Mar 05.2007

is there an easy way to capture the button object that was clicked to submit a for onSubmit? i’d like to capture it to apply changes onSubmit without having to hard code an id or name for the button if it’s possible? ?

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JavaScript

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@mrhooMar 05.2007 — It depends on how you call the onsubmit handler-

if you can call it from a validating function, you'll need to capture it there.

And if the form can be submitted by pressing enter, there won't be a reference to the button at all.

But you can get the target element (or srcElement) of any event that calls a function:

function(e){

var whosit;

if(window.event)whosit= event.srcElement; //IE

else if(e.target)whosit=e.target; //Everybody else

//whosit is element whose event called the function

}
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@bcamp1973authorMar 05.2007 — crud, i completely spaced that issue. well, that at least gets me a partial solution, thank you! your fix leads me to another question. I commonly see function(e) and i don't quite understand it's use. can you elaborate?
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@mrhooMar 05.2007 — Without any intervention, most browsers pass a parameter to an event handler that is basically the [B]this [/B]of the event.

IE doesn't, but every event generates a global window.event in IE,

so you can use window.event or event in IE to refer to the same event that the other browsers pass as an argument.
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@bcamp1973authorMar 05.2007 — ahh, ok that makes more sense. thank you!
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