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Cómo evitar el comportamiento normal del cursor al presionar teclas en un área de texto

Tengo el siguiente código

 textarea#main-text-area( rows="1" ref="textArea" maxlength="4096" v-model="message" :placeholder="placeholder" @keyup="onTextAreaKeyUp" @change="onChangeMessage" :class="{ 'vars-error': varsError }" v-click-outside="onTextAreaBlur" )

y escucho el evento keyup. Necesito que el cursor no se mueva cuando presiono arriba o abajo.

Intenté hacer lo siguiente, pero no funcionó porque el cursor se movió de todos modos

 onTextAreaKeyUp(e) { if (e.key === 'ArrowDown' || e.key === 'ArrowUp') { e.preventDefault(); } }
about 4 years ago · Juan Pablo Isaza
1 answers
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Use preventDefault en el evento keydown en lugar de keyup .

 document.querySelector('textarea').addEventListener('keydown', e => { if (e.key === 'ArrowDown' || e.key === 'ArrowUp') { e.preventDefault() } })
 <textarea>Hello, World! Hello, World! Hello, World! Hello, World! </textarea>

about 4 years ago · Juan Pablo Isaza Report
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