Updating view model data in Knockout from a different view model can be achieved by using observable properties and

For my web page, I am utilizing Knockout.js to connect various sections together. Each section is associated with its own view model data. When a change is made to an element in one view model, I need to automatically update a corresponding element in another view model. Both view models have an ID field that uniquely identifies each set of data.

Answer №1

To simplify the code, you can pass one view model into another:

var MainViewModel = function() {
    var self = this;
    self.selectedItem = ko.observable();
};

var SubViewModel = function(mainViewModel) {
    self = this;
    self.content = ko.observable();
    mainViewModel.selectedItem.subscribe(function(){
       self.content('value changed')
    });
};


var mainModel = new MainViewModel();
var subModel = new SubViewModel(mainModel);

ko.applyBindings(mainModel, document.getElementById("section1"));
ko.applyBindings(subModel, document.getElementById("section2"));

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