How to get radiobutton by default checked with bootbox prompt - radio-button

Question

I am able to display radio buttons using bootbox prompt. But I am not getting the checked radio button by default. How to do that . Here is my code to displaying radio buttons.
bootbox.prompt({
title: "This is a prompt with a set of Radiobutton inputs!",
inputType: 'radio',
inputOptions: [
{
text: 'EU Format',
value: '1',
checked: true,
},
{
text: 'Standard Format',
value: '2',
}
],
callback: function (result) {
console.log(result);
}
});
I have added checked: true, and tried with checked : "checked" , but not sure these both not working . Any help would be greatly appreciated.

Answer 1

This is actually covered in the documentation, here. I've also answered this previously, but since I don't have a link to that answer at the moment, this is what you need to do:
bootbox.prompt({
title: "This is a prompt with a set of Radiobutton inputs!",
inputType: 'radio',
value: '1', /* value sets the initial checked item */
inputOptions: [
{
text: 'EU Format',
value: '1',
checked: true,
},
{
text: 'Standard Format',
value: '2',
}
],
callback: function (result) {
console.log(result);
}
});
The only difference between radiobuttons and checkboxes is that you can only set a single value with radios. NOTE THAT THE TYPES MUST MATCH. In your example, '1' would work, but 1 would not, since the former is a string, whereas the latter is a number. We don't do any explicit type coercion when checking the value attribute.
Since you're referencing the radio type, I assume you're using the 5.x version? If so, I have a work-in-progress update to the docs here, until I can push the 5.x version out. The old docs are still valid, but it (obviously?) doesn't document some of the new features.