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<h3>The basic solution</h3> <p>You asked how one can unsubscribe something subscribed to KnockoutJS. </p> <p>Knockout observable subscriptions expose a <a href="http://knockoutjs.com/documentation/observables.html" rel="nofollow"><code>.dispose()</code></a> function just for that.</p> <p>When you subscribe:</p> <pre><code>var subscription = toDate.subscribe(function (newValue) { //do nothing }); </code></pre> <p>Clean up:</p> <pre><code>subscription.dispose(); </code></pre> <p>If you want this for multiple subscriptions, you might want to consider pushing them into an array and then cleaning up after all of them, something like</p> <pre><code>var subs = []; function subSafe(observable,function){ subs.push(observable.subscribe(function)); } function unsubscribeAll(){ subs.forEach(function(subscription){ subscription.dispose(); }); } </code></pre> <hr> <h3>A self contained example.</h3> <p>Let's say we have two buttons and a value, one button increments that value. We have a listener to the value changing which has an <code>alert</code>. When we click the second button, the subscription is removed.</p> <p><strong>HTML:</strong></p> <pre><code><button data-bind="click: $root.inc">Inc</button> <button data-bind="click: $root.unsub">Remove subscription</button> </code></pre> <p><strong>JavaScript:</strong></p> <pre><code>var vm = { val:ko.observable(0), inc:function(){ vm.val(vm.val()+1); }, }; vm.sub = vm.val.subscribe(function(newVal){ alert("Increased to "+newVal); }); vm.unsub = function(){ vm.sub.dispose(); } ko.applyBindings(vm); </code></pre> <h3><a href="http://jsfiddle.net/n9MLY/" rel="nofollow">Here is a short fiddle illustrating the process</a></h3>
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