Hide Error Message on Client Script

[agblog]

I have a self service catalog form which has many flows depending upon users "Yes" and "No" selection. For the last Yes/No selection, if user selects "No" and clicks "Add To Cart" then a Error message shows up "Sorry! You cannot complete this transaction"  at the top of the screen. I want if this "No" condition is false i.e if user selects Yes or changes and any other previously selected Yes/No option then the Error Message should hide/go away. How can I achieve that?

Here is the Client Script:

function onSubmit() {
//Type appropriate comment here, and begin script below
var a1 = g_form.getValue('X');

if (a1== 'No'){
g_form.addErrorMessage('Sorry! You cannot complete this transaction.');
return false;
}
}

Thanks!

[Ashok Katam]

It will display error message and abort submission, so user has to make changes and submit/add to cart again. Then it clears that message and submits if there is no issue or display error again if condition is satisfied.

Is the requirement different?

[agblog]

I used but it did not work:

function onSubmit() {
//Type appropriate comment here, and begin script below
var a1 = g_form.getValue('X');

if (a1== 'No'){
g_form.addErrorMessage('Sorry! You cannot complete this transaction.');
return false;
}

else{

g_form.clearMessages();

}
}

[Sateesh Kumar 2]

Make sure Use Maxwell's script on  first line of your onsubmit script.

Miss placing it would bring wrong results.