Using target='_self' in JSON query

I have a generic base target blank call in my blog. However, I want to also make a "Self" call for some functions. I have managed to work this out. But in this I can't figure out how to do it. May someone kindly let me know the solution to this problem. In my case I want the "RECENT POSTS" and "CATEGORIES" to open in the same Tab itself by using target='_self'

Here is the code where I am having the problem:

    <nav id='nav'>
           <li><a expr:href='data:blog.homepageUrl' target='_self'>Home</a></li>
         <li><a href='/' target='_self'>Recent Post</a>

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