mailto link binding?

[thn...@gmail.com]

I'm new to Knockout and trying to determine how I might generate an email link with knockout. The problem is around using "href:" with "mailto:". I've tried various variants including the below and others but either it won't get rendered as mailto link, the property name will be sent instead of the value, or nothing will be rendered. Tips on what syntax I should be using for this? Thanks

<a data-bind="mailto: EmailAddress, text: EmailAddress"></a>

<a data-bind="attr: { href: 'mailto:PrimaryEmail', title: PrimaryEmail }, text : PrimaryEmail">

[rpn]

Hello-

You would want to do it like: 

<a data-bind="attr: { href: 'mailto:' + PrimaryEmail, title: PrimaryEmail }, text : PrimaryEmail">

if PrimaryEmail is an observable, then it would look like:

<a data-bind="attr: { href: 'mailto:' + PrimaryEmail(), title: PrimaryEmail }, text : PrimaryEmail">

[geoff.eve...@gmail.com]

Thank you, that worked great. I find it a bit verbose though and created an HTML helper for it. Speaking of, has anyone created any knockout html helpers? I guess the use of such could be debated in terms of pros and cons but...