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Método addColorStop() da tela HTML

❮ Objeto de tela

Exemplo

Defina um gradiente que vá do preto ao branco, como estilo de preenchimento do retângulo:

Seu navegador não suporta a tag HTML5canvastag.

JavaScript:

var c = document.getElementById('myCanvas');
var ctx = c.getContext('2d');

var grd = ctx.createLinearGradient(0, 0, 170, 0);
grd.addColorStop(0, "black");
grd.addColorStop(1, "white");

ctx.fillStyle = grd;
ctx.fillRect(20, 20, 150, 100);

Suporte ao navegador

Os números na tabela especificam a primeira versão do navegador que oferece suporte total ao método.

Method
addColorStop() 4.0 9.0 3.6 4.0 10.1

Definição e uso

O método addColorStop() especifica as cores e a posição em um objeto gradiente.

O método addColorStop() é usado junto com createLinearGradient() ou createRadialGradient() .

Observação: você pode chamar o método addColorStop() várias vezes para alterar um gradiente. Se você omitir esse método para objetos de gradiente, o gradiente não ficará visível. Você precisa criar pelo menos uma parada de cor para ter um gradiente visível.

Sintaxe JavaScript: gradiente .addColorStop( stop , color );

Valores de parâmetro

Parameter Description Play it
stop A value between 0.0 and 1.0 that represents the position between start and end in a gradient
color A CSS color value to display at the stop position


Mais exemplos

Exemplo

Defina um gradiente com vários métodos addColorStop():

O seu navegador não suporta ocanvastag.

JavaScript:

var c = document.getElementById("myCanvas");
var ctx = c.getContext("2d");

var grd = ctx.createLinearGradient(0, 0, 170, 0);
grd.addColorStop(0, "black");
grd.addColorStop("0.3", "magenta");
grd.addColorStop("0.5", "blue");
grd.addColorStop("0.6", "green");
grd.addColorStop("0.8", "yellow");
grd.addColorStop(1, "red");

ctx.fillStyle = grd;
ctx.fillRect(20, 20, 150, 100);

❮ Objeto de tela