Created
July 3, 2013 13:37
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knockout js binding for jQuery autoNumeric
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| ;(function ($) { | |
| var getElementValue = function(el) { | |
| return parseFloat(el.autoNumeric('get'), 10); | |
| } | |
| var getModelValue = function(accessor) { | |
| return parseFloat(ko.utils.unwrapObservable(accessor()), 10); | |
| } | |
| ko.bindingHandlers.autoNumeric = { | |
| init: function (el, valueAccessor, bindingsAccessor, viewModel) { | |
| var $el = $(el), | |
| bindings = bindingsAccessor(), | |
| settings = bindings.settings || { aSign: '' }, | |
| value = valueAccessor(); | |
| function updateModelValue() { | |
| value(getElementValue($el)); | |
| }; | |
| if (settings.pSign === 's') { | |
| settings.aSign = ' ' + settings.aSign; | |
| } else { | |
| settings.aSign = settings.aSign + ' '; | |
| } | |
| $el.autoNumeric(settings); | |
| $el.autoNumeric('set', getModelValue(value)); | |
| $el.change(updateModelValue); | |
| }, | |
| update: function (el, valueAccessor, bindingsAccessor, viewModel) { | |
| var $el = $(el), | |
| newValue = getModelValue(valueAccessor()), | |
| elementValue = getElementValue($el), | |
| valueHasChanged = (newValue != elementValue); | |
| if ((newValue === 0) && (elementValue !== 0) && (elementValue !== "0")) { | |
| valueHasChanged = true; | |
| } | |
| if (valueHasChanged) { | |
| $el.autoNumeric('set', newValue); | |
| setTimeout(function () { $el.change() }, 0); | |
| } | |
| } | |
| }; | |
| })(jQuery); |
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