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css.js
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css.js
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var classesWrittenByBindingKey = '__ko__cssValue';
ko.bindingHandlers['class'] = {
'update': function (element, valueAccessor) {
var value = ko.utils.stringTrim(ko.utils.unwrapObservable(valueAccessor()));
ko.utils.toggleDomNodeCssClass(element, element[classesWrittenByBindingKey], false);
element[classesWrittenByBindingKey] = value;
ko.utils.toggleDomNodeCssClass(element, value, true);
}
};
ko.bindingHandlers['css'] = {
'update': function (element, valueAccessor) {
var value = ko.utils.unwrapObservable(valueAccessor());
if (value !== null && typeof value == "object") {
ko.utils.objectForEach(value, function(className, shouldHaveClass) {
shouldHaveClass = ko.utils.unwrapObservable(shouldHaveClass);
ko.utils.toggleDomNodeCssClass(element, className, shouldHaveClass);
});
} else {
ko.bindingHandlers['class']['update'](element, valueAccessor);
}
}
};