updating “placeholder” attribute using knockout

Question

I have a form with some fields getting some data using knockout.js (ver. 2.1.0). For example, to update the \"value\" field of an input I put:

Answer 1

You should use the existing attr binding, like this:

var Model = function () {
    this.ph = ko.observable("Text..."); 
}
ko.applyBindings(new Model());