Christian Engel提出了一个问题：knockout.js: update bindings?，或许与您遇到的问题类似。
回答者CommunityColinE给出了该问题的处理方式：
Each time you invoke ko.applyBindings the entire DOM is inspected for bindings. As a result you will get multiple bindings for each element if you do this more than once. If you just want to bind a new DOM element you can pass this element as a parameter to the applyBindings function:
ko.applyBindings(viewModelA, document.getElementById("newElement"));
See this related question:
Can you call ko.applyBindings to bind a partial view?
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