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Number format convert
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| <template> | |
| <require from="./card-number-format-value-converter"></require> | |
| <input type="text" id="cardNumber" placeholder="1234 5678 9123 4567" | |
| value.bind="cardNumber & cardNumberFormat"> | |
| <br> | |
| </template> |
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| export class App { | |
| } |
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| export class CardNumberFormatBindingBehavior { | |
| bind(binding, source, lookupFunctions) { | |
| binding.originalUpdateSource = binding.updateSource; | |
| binding.updateSource = value => { | |
| const cleanValue = value.replace(/[^\d]/g, ''); | |
| binding.updateTarget(cleanValue); | |
| console.log(`updateSource, cleanValue=${cleanValue}, value=${value}`); | |
| binding.originalUpdateSource(cleanValue); | |
| } | |
| binding.originalUpdateTarget = binding.updateTarget; | |
| binding.updateTarget = value => { | |
| let cardNumberBlocks = this.createCardNumberBlocks(value); | |
| if (cardNumberBlocks) { | |
| console.log("Returning " + cardNumberBlocks.join(" ")) | |
| binding.originalUpdateTarget(cardNumberBlocks.join(" ")); | |
| } else { | |
| console.log("Returning nothing.") | |
| binding.originalUpdateTarget(""); | |
| } | |
| } | |
| } | |
| unbind(binding, source) { | |
| binding.updateSource = binding.originalUpdateSource; | |
| delete binding.originalUpdateSource; | |
| binding.updateTarget = binding.originalUpdateTarget; | |
| delete binding.originalUpdateTarget; | |
| } | |
| createCardNumberBlocks(value) { | |
| if (!value) return ""; | |
| return value.match(/\d{1,4}/g); | |
| } | |
| } |
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| <!doctype html> | |
| <html> | |
| <head> | |
| <title>Aurelia</title> | |
| <meta name="viewport" content="width=device-width, initial-scale=1"> | |
| </head> | |
| <body aurelia-app> | |
| <h1>Loading...</h1> | |
| <script src="https://cdn.rawgit.com/jdanyow/aurelia-bundle/v1.0.3/jspm_packages/system.js"></script> | |
| <script src="https://cdn.rawgit.com/jdanyow/aurelia-bundle/v1.0.3/config.js"></script> | |
| <script> | |
| System.import('aurelia-bootstrapper'); | |
| </script> | |
| </body> | |
| </html> |
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