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An example of the difference between submit() in JQuery and JS

巴扎黑
Release: 2017-06-29 10:35:50
Original
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This article mainly introduces the difference between JQuery and submit() in JS. Friends who need it can refer to

ASP.NET serverControlPostback is using this piece of JS code:

The code is as follows:

var theForm = 
document
.forms['form1']; 
if (!theForm) { 
theForm = document.form1; 
} 
function doPostBack(eventTarget, eventArgument) { 
if (!theForm.onsubmit || (theForm.onsubmit() != false)) { 
theForm.EVENTTARGET.value = eventTarget; 
theForm.EVENTARGUMENT.value = eventArgument; 
theForm.submit(); 
} 
}
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The problem I encountered today is that I want to post back before the server-side control Assign a value to one of the hidden fields to pass the value to the server .

So I added an event using JQuery's submit([[data],fn]) method, but found that it didn't work.

I tried $("form:first").submit() and found that the event function can be triggered.

What's going on? After checking the information, I found that the native function void submit() of js does not trigger the submit event. This is why there is

in the code above. The code is as follows:

if (!theForm.onsubmit || (theForm .onsubmit() != false)) {
...
}


That’s it.

So write the added event as

The code is as follows:

$("form:first")<span style="color:#006600">.get(0)</span>.onsubmit = function () { 
... 
};
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That’s it.

In addition, events added using JQuery's submit([[data],fn]) can be triggered using $().submit().

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