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0

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Validación de número de entrada Svelte. No puedo evitar la entrada de letras.

No estoy seguro de lo que estoy haciendo mal. Las letras todavía se muestran en la entrada.

 <script> let value = ""; function isNumber(value) { return !isNaN(value); } function handleInput(e) { let oldValue = value; let newValue = e.target.value; console.log(oldValue, newValue, "isNumber", isNumber(newValue)); if (isNumber(newValue) && newValue.length < 17) { value = newValue; } else { value = oldValue; } } </script> <div class="container"> <input {value} on:input|preventDefault={handleInput} /> </div>

Aquí está el REPL también.

about 4 years ago · Juan Pablo Isaza
1 answers
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0

podrías hacer esto:

 else { e.target.value = oldValue; }
about 4 years ago · Juan Pablo Isaza Report
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