bindinghandlers | 易学教程

Custom knockout binding fires twice, unexpectedly

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问题 I have written a custom binding handler to bind my viewmodel data to a highcharts chart. This really has 2 parts, one binds the initial config required for highcharts, the second binds the series to the chart. here is the bindingHandler code ko.bindingHandlers.highchart = { update: function(element, valueAccessor, allBindings, viewModel, bindingContext) { var value = valueAccessor(); var valueUnwrapped = ko.unwrap(value); console.log ('update',element.id,valueUnwrapped); if(allBindings.get(

Knockout custom binding not updating

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问题 Please check what I am doing wrong. The update part of my custom bindinghandler does not executes when I create a control in javascript. I have an Add function that create a row in a table. Controls that are bound to the custom binding does executes the update part but not controls that are subsequently added. HTML <div id="collapse-programHead" class="panel-collapse collapse"> <div class="panel-body"> <table class="cv"> <thead> <tr> <th>Programme</th> <th>Core Module Count</th> <th>Core SAQA

Knockoutjs foreach custom bindinghandler with afterAdd

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问题 I would like to build a custom bindingHandler ko.bindingHandlers.foreachWithHighlight that has an highlight effect when afterAdd. From documentation yellowFadeIn: function(element, index, data) { $(element).filter("li") .animate({ backgroundColor: 'yellow' }, 200) .animate({ backgroundColor: 'white' }, 800); }, But I want to always add this to my valueAccessor and pass it to the foreach binding. ko.bindingHandlers.foreachWithHighlight = { init: function (element, valueAccessor,

Knockoutjs foreach custom bindinghandler with afterAdd

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I would like to build a custom bindingHandler ko.bindingHandlers.foreachWithHighlight that has an highlight effect when afterAdd. From documentation yellowFadeIn: function(element, index, data) { $(element).filter("li") .animate({ backgroundColor: 'yellow' }, 200) .animate({ backgroundColor: 'white' }, 800); }, But I want to always add this to my valueAccessor and pass it to the foreach binding. ko.bindingHandlers.foreachWithHighlight = { init: function (element, valueAccessor, allBindingsAccessor, viewModel, context) { return ko.bindingHandlers.foreach.init(element, valueAccessor,