function rc(){
var r=Math.floor(Math.random()*256);
var g=Math.floor(Math.random()*256);
var b=Math.floor(Math.random()*256);
return `rgb(${r},${g},${b})`;
}
function rc(){
var colorStr="";
//字符串的每一字符的范围
var randomArr=['0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'];
//产生一个六位的字符串
for(var i=0;i<6;i++){
//15是范围上限,0是范围下限,两个函数保证产生出来的随机数是整数
colorStr+=randomArr[Math.ceil(Math.random()*(15-0)+0)];
}
return colorStr;
}
function bg1(){
var colorStr="";
//字符串的每一字符的范围
var randomArr=['0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'];
//产生一个六位的字符串
for(var i=0;i<6;i++){
//15是范围上限,0是范围下限,两个函数保证产生出来的随机数是整数
colorStr+=randomArr[Math.ceil(Math.random()*(15-0)+0)];
}
return colorStr;
}