js生成随机颜色

• 十六进制颜色，方法1

const randomHex = () => `#${Math.floor(Math.random() * 0xffffff).toString(16).padEnd(6, "0")}`;    

console.log(randomHex());

• 十六进制颜色，方法2

const randomColor = () => `#${Math.random().toString(16).substr(2, 6)}`;    

console.log(randomColor());

• RGB格式

function rgb(){//rgb颜色随机
			var r = Math.floor(Math.random()*256);
			var g = Math.floor(Math.random()*256);
			var b = Math.floor(Math.random()*256);
			var rgb = '('+r+','+g+','+b+')';
			return rgb;
		}

• 颜色RGB转十六进制

const rgbToHex = (r, g, b) => "#" + ((1 << 24) + (r << 16) + (g << 8) + b).toString(16).slice(1);   

rgbToHex(0, 51, 255);