KnockOut data-bind =「visible：需要幫助來解決問題

如果數組長度大於0，我想隱藏div。通過放置警告消息，我確認數組長度= 0，然後div應該隱藏。但是，當運行應用程序的div可見KnockOut data-bind =「visible：需要幫助來解決問題

<body> 
    <form id="form1" runat="server"> 
    <div> 

    <div data-bind="visible: myValues().length > 0"> 
    You will see this message only when 'myValues' has at least one member. 
</div> 


    </div> 
    </form> 
</body> 
<script type="text/javascript"> 
    var viewModel = { 
     myValues: ko.observableArray([]) // Initially empty, so message hidden 
    }; 
    alert('The length of the array is ' + viewModel.myValues().length); 
</script>

來源

2014-09-02 Sivakumar Piratheeban

<body> 
    <form id="form1" runat="server"> 
    <div> 

    <div data-bind="visible: myValues().length > 0"> 
    You will see this message only when 'myValues' has at least one member. 
    </div>

您需要與applybindings結合這一點：

</div> 
    </form> 
</body> 
<script type="text/javascript"> 
    var viewModel = { 
     myValues: ko.observableArray([]) // Initially empty, so message hidden 
    }; 
    alert('The length of the array is ' + viewModel.myValues().length); 



    ko.applyBindings(viewModel); 
</script>

來源

2014-09-02 05:12:57 marko

KnockOut data-bind =「visible：需要幫助來解決問題

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