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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| </head> | |
| <body> | |
| <input type="text" onkeypress="keyPress(event,this)" id="tc"/> <button onclick="guarda()"> Verificar | |
| </button> | |
| <button onclick="showStorer()">Ver datos ingresados</button> | |
| </body> | |
| <script> | |
| var storer; | |
| var input; | |
| function keyPress(e, el){ | |
| if(e.keyCode === 13) | |
| guarda(); | |
| } | |
| function guarda(){ | |
| if( !/[\w]/.test(input.value) ) //esto valida si el campo esta vacio | |
| return false; | |
| //escribe aquí el codigo para verificar la tarjeta | |
| //INVESTIGA SOBRE PATRONES ej. de patron TC VISA /^4\d{3}-?\d{4}-?\d{4}-?\d{4}$/ | |
| if(/^4\d{3}-?\d{4}-?\d{4}-?\d{4}$/.test(input.value) ) | |
| alert("La tarjeta es VISA"); | |
| //------------ | |
| storer.push(input.value); //esta línea guarda si la tarjeta es valida, en caso de que no lo sea no la ejecutes | |
| } | |
| function showStorer(){ | |
| alert(JSON.stringify(storer)); | |
| } | |
| window.onload = function(){ | |
| storer = new Array(); | |
| input = document.querySelector("#tc"); | |
| } | |
| </script> | |
| </html> |
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