onoff = 0;
document.getElementById("c").addEventListener("click",()=>{
    document.getElementById("view").innerHTML = (()=>{
        onoff = !onoff?1:0;
        return onoff?"on":"off";
    })();
});

var h = {
	color: [
		{ name: "black" }
		, { name: "aliceblue" }
		, { name: "darkcyan" }
		, { name: "lightyellow" }
		, { name: "coral" }
		, { name: "dimgray" }
		, { name: "lavender" }
		, { name: "teal" }
		, { name: "lightgoldenrodyellow" }
		, { name: "tomato" }
		, { name: "gray" }
		, { name: "lightsteelblue" }
		, { name: "darkslategray" }
		, { name: "lemonchiffon" }
		, { name: "orangered" }
		, { name: "darkgray" }
		, { name: "lightslategray" }
		, { name: "darkgreen" }
		, { name: "wheat" }
		, { name: "red" }
		, { name: "silver" }
		, { name: "slategray" }
		, { name: "green" }
		, { name: "burlywood" }
		, { name: "crimson" }
		, { name: "lightgray" }
		, { name: "steelblue" }
		, { name: "forestgreen" }
		, { name: "tan" }
		, { name: "mediumvioletred" }
		, { name: "gainsboro" }
		, { name: "royalblue" }
		, { name: "seagreen" }
		, { name: "khaki" }
		, { name: "deeppink" }
		, { name: "whitesmoke" }
		, { name: "midnightblue" }
		, { name: "mediumseagreen" }
		, { name: "yellow" }
		, { name: "hotpink" }
		, { name: "white" }
		, { name: "navy" }
		, { name: "mediumaquamarine" }
		, { name: "gold" }
		, { name: "palevioletred" }
		, { name: "snow" }
		, { name: "darkblue" }
		, { name: "darkseagreen" }
		, { name: "orange" }
		, { name: "pink" }
		, { name: "ghostwhite" }
		, { name: "mediumblue" }
		, { name: "aquamarine" }
		, { name: "sandybrown" }
		, { name: "lightpink" }
		, { name: "floralwhite" }
		, { name: "blue" }
		, { name: "palegreen" }
		, { name: "darkorange" }
		, { name: "thistle" }
		, { name: "linen" }
		, { name: "dodgerblue" }
		, { name: "lightgreen" }
		, { name: "goldenrod" }
		, { name: "magenta" }
		, { name: "antiquewhite" }
		, { name: "cornflowerblue" }
		, { name: "springgreen" }
		, { name: "peru" }
		, { name: "fuchsia" }
		, { name: "papayawhip" }
		, { name: "deepskyblue" }
		, { name: "mediumspringgreen" }
		, { name: "darkgoldenrod" }
		, { name: "violet" }
		, { name: "blanchedalmond" }
		, { name: "lightskyblue" }
		, { name: "lawngreen" }
		, { name: "chocolate" }
		, { name: "plum" }
		, { name: "bisque" }
		, { name: "skyblue" }
		, { name: "chartreuse" }
		, { name: "sienna" }
		, { name: "orchid" }
		, { name: "moccasin" }
		, { name: "lightblue" }
		, { name: "greenyellow" }
		, { name: "saddlebrown" }
		, { name: "mediumorchid" }
		, { name: "navajowhite" }
		, { name: "powderblue" }
		, { name: "lime" }
		, { name: "maroon" }
		, { name: "darkorchid" }
		, { name: "peachpuff" }
		, { name: "paleturquoise" }
		, { name: "limegreen" }
		, { name: "darkred" }
		, { name: "darkviolet" }
		, { name: "mistyrose" }
		, { name: "lightcyan" }
		, { name: "yellowgreen" }
		, { name: "brown" }
		, { name: "darkmagenta" }
		, { name: "blush" }
		, { name: "cyan" }
		, { name: "darkolivegreen" }
		, { name: "firebrick" }
		, { name: "purple" }
		, { name: "seashell" }
		, { name: "aqua" }
		, { name: "olivedrab" }
		, { name: "indianred" }
		, { name: "indigo" }
		, { name: "oldlace" }
		, { name: "turquoise" }
		, { name: "olive" }
		, { name: "rosybrown" }
		, { name: "darkslateblue" }
		, { name: "ivory" }
		, { name: "mediumturquoise" }
		, { name: "darkkhaki" }
		, { name: "darksalmon" }
		, { name: "blueviolet" }
		, { name: "honeydew" }
		, { name: "darkturquoise" }
		, { name: "palegoldenrod" }
		, { name: "lightcoral" }
		, { name: "mediumpurple" }
		, { name: "mintcream" }
		, { name: "lightseagreen" }
		, { name: "cornsilk" }
		, { name: "salmon" }
		, { name: "slateblue" }
		, { name: "azure" }
		, { name: "cadetblue" }
		, { name: "beige" }
		, { name: "lightsalmon" }
		, { name: "mediumslateblue" }
	]
};
document.body.style.backgroundColor = h.color[getRandomInt(h.color.length)].name;
function getRandomInt(max) {
	return Math.floor(Math.random() * Math.floor(max));
}