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[英]How can I, using Knockout, make a div only viewable when a value from a dropdown is selected?
[英]How can I, using Knockout on Sharepoint, have a div visable when a value from a list is clicked on a dropdown?
Application:
<select data-bind="value: $data.selectedApp, options: $parent.applications, optionsText: 'ApplicationName', optionsCaption: 'Choose an Application'" style="width: 32px" name="Application list" id="dataBox">
</select>
为此,我试图
<Div = "main">...</div>
单击名为“ USB Access Request”的下拉菜单时可见。
我的JavaScript:
<script>
var viewModel = {
selectedChoice: ko.observable("USB Read/Write") ,
selectionChanged: function(event) {
show( "main" );
}
};
ko.applyBindings(viewModel);
</script>
您可能正在寻找这样的东西
查看模型:
var viewModel = function () {
var self = this;
self.selectedApp = ko.observable();
self.applications = ko.observableArray([{
"ApplicationName": "application1"},{
"ApplicationName": "application2"},{
"ApplicationName": "application3"}
]);
};
ko.applyBindings(new viewModel())
查看:
Application:
<select data-bind="value:selectedApp,options:applications,optionsText:'ApplicationName',optionsCaption:'Choose an Application'" style="width: 160px"></select>
<div data-bind="if:selectedApp">
<h2>i'm Main DIV</h2>
</div>
好吧,我看到html很简单,因此if
在这种情况下进行绑定,它总是更好地使用。
在这里工作
任何问题都让我们知道
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