JSFiddle - React, Tailwind, and code Playground

HTML

<div data-bind='foreach: note'>
    <p><span data-bind='text: post'>
    <p><input data-bind='value: post'>
</div>

JavaScript

var Model = function(notes) {
    this.note = ko.observableArray(notes.map(function(note){
        note.post = ko.observable(note.post);
        return note;
    }));
}; 
var model = new Model([{"post":"a"},{"post":"b"}]);
ko.applyBindings(model);