Different methods of OnChange

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Posted on by CRM Naren

Hi All,

There are three methods you can use to work with the OnChange event for an attribute.

Could you please explain the below different methods, if possible please provide the Scenario based code.

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CRM Naren 5 on at

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RE: Different methods of OnChange

Yes
a33ik 84,325 Most Valuable Professional on at

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RE: Different methods of OnChange

You are welcome! If my reply answered your question take a minute and click "Yes" under the question "Did this answer your question?".
CRM Naren 5 on at

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RE: Different methods of OnChange

Thank you so Much for the information Andrew
a33ik 84,325 Most Valuable Professional on at

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RE: Different methods of OnChange

Naren,

That could be considered as examples.
CRM Naren 5 on at

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RE: Different methods of OnChange

Hi Andrew,

Greetings for the day!

Thanks for your information.

I saw some code snippet for the addonchange and Fireonchange functions can I consider the below as examples.

Regards,

Naren
a33ik 84,325 Most Valuable Professional on at

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RE: Different methods of OnChange

Hello,

You provided the urls for methods - that is great. If you will check the description at the top - it should be clear enough how every of method can be used:

addOnChange - Sets a function to be called when the OnChange event occurs.

example:

function onNameChanged(executionContext){

alert("name was changed");

}

//attach this function to onload event of the for and check "Pass execution context as a first parameter" checkbox

function onLoad(executionContext){

var formContext = executionContext.getFormContext();

formContext.getAttribute("name").addOnChange(onNameChanged);

}

What this code does is following - during the load of the form code attaches onNameChanged function as a handle for onchange event of "name" field on the for.

removeOnChange - Removes a function from the OnChange event hander for an attribute.

it does opposite to the addOnChange - removes the handler from field. Example:

function someFunction(executionContext){

var formContext = executionContext.getFormContext();

formContext.getAttribute("name").removeOnChange(onNameChanged);

}

fireOnChange - Causes the OnChange event to occur on the attribute so that any script associated to that event can execute.

if you want to trigger event handler for the field when field value changes - you can use this method. Example:

function someFunction(executionContext){

var formContext = executionContext.getFormContext();

formContext.getAttribute("name").fireOnChange();

}