Home  Trucos Cómo cambiar los colores de fondo y del texto
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Cómo cambiar los colores de fondo y del texto |
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autor iskiam
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Monday, 31 de January de 2005 |
Si por cualquier circunstancia queremos cambiar el color del fondo y del texto de una página web (por ejemplo, que deseemos imprimir una página y ésta esté creada con colores con los cuales no queremos imprimir para no malgastar tinta a color o porque tenemos problemas para leerla)...
Si por cualquier circunstancia queremos cambiar el color del fondo y del texto de una página web (por ejemplo, que deseemos imprimir una página y ésta esté creada con colores con los cuales no queremos imprimir para no malgastar tinta a color o porque tenemos problemas para leerla) escribimos el siguiente comando en la barra Dirección del navegador:
javascript:void(document.bgColor=color)
donde color toma un valor hexadecimal que sirve para expresar el color deseado, utilizando dos dígitos para cada color: rojo, verde y azul (RGB). Cada color puede tomar un valor entre 0 y 255, o 00 y FF en hexadecimal. Por lo tanto, para un rojo puro se utilizaría #FF0000; para un verde #00FF00 y para un azul #0000FF y jugando con estos valores se puede obtener una gama de nada menos que 16 millones de colores. Color también puede venir expresado como una cadena de texto, con algunos de los siguientes colores: aqua, black, blue, fuchsia, gray, green, lime, maroon, navy, olive, purple, red, silver, teal, white, yellow. Podemos mejorar el truco haciendo que aparezca una ventana en la que se nos solicite el color. Para ello escribimos lo siguiente en la barra Dirección del navegador:
javascript:void(document.bgColor=prompt("Introduzca color de fondo"","white"))
En cuanto a los colores del texto, la sentencia en Javascript funciona de forma similar, sólo hemos de cambiar una bg (background) por fg (foreground):
javascript:void(document.fgColor=prompt("Introduzca color de texto"","black"))
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javascript:void(document.fgColor=prompt("Introduzca color de texto"","black")) |
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