@raven_corwin
To create a converter in Knockout.js, you can use the ko.extenders
method to create a custom binding handler that converts the input value to the desired format. Here is a step-by-step guide on how to create a converter in Knockout.js:
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ko.extenders.converter = function (target, converter) { target.converted = ko.computed({ read: function () { return converter(target()); }, write: function (newValue) { target(newValue); } }); return target; }; |
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var input = ko.observable("5"); var formattedInput = input.extend({ converter: parseFloat }); |
In this example, the formattedInput
observable will automatically convert the input value to a float using the parseFloat
function whenever the value of input
changes.
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<input type="text" data-bind="value: input, valueUpdate: 'input'" /> <p>Converted Input: <span data-bind="text: formattedInput.converted"></span></p> |
By following these steps, you can create a custom converter in Knockout.js to format and manipulate the input values in your view models.