给定这个函数，我想用随机颜色生成器替换颜色。
document.overlay = GPolyline.fromEncoded({
color: "#0000FF",
weight: 10,
points: encoded_points,
zoomFactor: 32,
levels: encoded_levels,
numLevels: 4
});
我该怎么做呢?
当前回答
增强了一点的一行代码，使方法更加生动
'#' + Math.round((0x1000000 + 0xffffff * Math.random())).toString(16).slice(1)
其他回答
var html = '';
var red;
var green;
var blue;
var rgbColor;
for ( var i = 1; i <= 100; i += 1) {
red = Math.floor(Math.random() * 256 );
green = Math.floor(Math.random() * 256 );
blue = Math.floor(Math.random() * 256 );
rgbColor = 'rgb(' + red + ',' + green + ',' + blue + ')';
html += '<div style="background-color:' + rgbColor + '"></div>';
}
document.write(html);
为了适当的随机性。
随机的颜色
`#${crypto.getRandomValues(new Uint32Array(1))[0].toString(16).padStart(8, 0).slice(-6)}`
随机的阿尔法，随机的颜色。
`#${crypto.getRandomValues(new Uint32Array(1))[0].toString(16).padStart(8, 0)}`
这个只生成饱和色
let randomSaturatedColor = () => {
let r = Math.random().toString(16).slice(2, 4)
let value_012345 = Math.random().toString(6).slice(2, 3)
let hex = {
[0]: `${r}00FF`,
[1]: `00${r}FF`,
[2]: `00FF${r}`,
[3]: `${r}FF00`,
[4]: `FF${r}00`,
[5]: `FF00${r}`,
}[value_012345]
return '#' + hex
}
Use:
function randomColor(){
var num = Math.round(Math.random() * Math.pow(10,7));
// Converting number to hex string to be read as RGB
var hexString = '#' + num.toString(16);
return hexString;
}
用这个:
// RGBA()
function getRandomRGBA() {
function numbers() {
var x = Math.floor(Math.random() * 256);
return x;
}
alpha = 1.0;
return (
"rgba(" +
numbers() +
", " +
numbers() +
", " +
numbers() +
", " +
alpha.toFixed(1) +
")"
);
}
