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¿El primer elemento no está presionando dentro de una matriz vacía en reactJS?

tratando de enviar datos que llegan a "id" a la matriz "selectedUserId", pero el primer elemento no se está insertando. La matriz selectedUserId no contiene el primer elemento empujado, la inserción solo funciona desde el segundo elemento en adelante.

 const handleSelectOne=(e)=>{ const id = e.target.value; console.log(id,"handling") if(!selectedUserIds.includes(id)) { selectedUserIds.push(id) } else { selectedUserIds.pop(id) } setCheckedStatusOne(!checkedStatusOne[id]) } const handleDeleteSelectedClick=() =>{ let deletionItemsNo = selectedUserIds.length selectedUserIds.map((id)=>{ return console.log(id, "<== element inside selecteduserids array") }) console.log(deletionItemsNo, "<== number of elements in array") }

salida de la consola de salida

about 4 years ago · Juan Pablo Isaza
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El método .pop() no acepta ningún argumento. Se utiliza para eliminar el último elemento de la matriz.

Para poder insertar un elemento al principio, debe usar .unshift(id)

about 4 years ago · Juan Pablo Isaza Report
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