How to create id in element in template when I have passed parameter?

Question

How to create id in element in template when I have passed parameter ? I have tried something like

<button id="p_"+{{key}} >TEST</button>

but in rendered HTML id is just p_ . Can someone tell me how to achieve this ?

Answer 1

<button id="p_{{key}}">TEST</button>

Answer 2

<button id="p_{{key}}">TEST</button>

you need the key to be Inside the quotes

I'm assuming you were using + to concat strings. I don't believe html supports any operations like that.