[SOLVED] data-bind foreach for an observable number

data-bind foreach for an observable number

I am trying to display stars for each item in a list

I have an interface that has the 5-star score on a video, how do I do a foreach for the count of that score? rather than creating an array for the score?

interface Video{
    Score: number;
}

<td>
    <span data-bind="foreach: score">
       <span class="glyphicon-star"></span>
    </span>
    <span data-bind="foreach: 5 - score">
       <span class="glyphicon-star-empty"></span>
    </span>
</td>

Solution

You could either use Array.from() or the Array(score) to create an array from the score

Array.from({ length: score })

[...Array(score)]

(Use score() if it's an observable)

Here's a minimal snippet:

const model = {
  score: 3
}

ko.applyBindings(model)

<script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.4.2/knockout-min.js"></script>

<span data-bind="foreach: Array.from({ length: score })">
   <span class="glyphicon-star">*</span>
</span>