JavaScript generates welfare lottery double color ball numbers_javascript skills

The double-color ball numbers of the welfare lottery are composed of 6 red ball numbers and 1 basketball number. Among them, the 6 red ball numbers are 6 numbers randomly drawn from 01 to 33, and the 1 basketball number is from 01 to a randomly selected number out of 16. The 6 red ball numbers are usually arranged in order from small to large. The following is a method to generate a double-color ball number in JavaScript for your reference!

var redBall = new Array();
var redLen = redBall.length;
while(redLen<6){
　var ball = ranNumber(1,33);
　var flag = true;
　for(var j=0;j<redLen;j++){
　if(redBall[j]==ball){
　　　flag = false;
　　　break;
　　}
　}
　
　if(flag){
　　if(ball<10){
　　　redBall.push(“0″+ball);
　　}else{
　　　redBall.push(ball);
　　}
　}
　
　redLen = redBall.length;
}
redBall.sort();
var blueBall = ranNumber(1,16);
if(blueBall<10){
　blueBall = “0″+blueBall;
}
alert(redBall.join(‘,') + “|” + blueBall);

The following is the ranNumber method, which randomly returns an integer between s and e.

function ranNumber(s,e){
　var staVal = parseFloat(s);
　var endVal = parseFloat(e);
　return Math.floor(Math.random()*(endVal-staVal)+staVal);
}

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