try this kingbet

var belance = document.getElementById('pct_balance').value;
document.getElementById('pct_chance').value = 49.5;
document.getElementById('pct_payout').value = 2;
var ebe = ((belance/24).toFixed(8));
var b = ebe;
var oldbal = parseFloat(document.getElementById('pct_balance').value);
var oldt = parseFloat(document.getElementById('pct_balance').value);
var f = true;
var target = 500;
var olderest = document.getElementById('pct_balance').value
var old = parseFloat(document.getElementById('pct_balance').value);
var oldc = parseFloat(document.getElementById('pct_balance').value);
var fold = parseFloat(document.getElementById('pct_balance').value);
var nextbet;
var jim = (ebe*8)
var him = (b*2)
var kim = (ebe*10)
var j = true
var g = true;
var wild = document.getElementById('pct_balance').value;
var min =document.getElementById('pct_balance').value;
parseFloat(document.getElementById('pct_bet').value = ebe);
parseFloat(document.getElementById('pct_profit').value = ebe);


function dobet(){
console.clear()
var balance = document.getElementById('pct_balance').value;
var previousbet = document.getElementById('pct_bet').value;
document.getElementById('pct_chance').value = 49.5;
document.getElementById('pct_payout').value = 2;
if (balance>=(oldt+(b*6))) {
    nextbet = previousbet*2;
    b = nextbet;
    oldt = parseFloat(balance);
}
if (balance<(oldbal-him)) {
    nextbet = previousbet*2;
    b = nextbet;
    him = (b*2);
    f = false;
    oldt = parseFloat(balance);
    oldbal = parseFloat(balance);
}
if (balance>=(old+kim)) {
    nextbet = ebe;
    b = ebe;
    kim = (ebe*9);
    f = true;
    him = (b*3);
    oldc   = parseFloat(balance);
    oldt = parseFloat(balance);
    oldbal = parseFloat(balance);
    old = parseFloat(balance);
}
if ((balance>=old)&&(f==false)) {
    nextbet = ebe;
    b = ebe;
    f = true;
    kim = (ebe*9);
    him = (b*3);
    oldc   = parseFloat(balance);
    oldt = parseFloat(balance);
    old = parseFloat(balance);
    oldbal = parseFloat(balance);
}
if (balance<=(oldc-jim)) {
    nextbet= ebe;
    b = nextbet;
    f = true;
    kim = (ebe*9);
    jim = (ebe*9);
    him = (b*3);
    oldt = parseFloat(balance);
    oldc   = parseFloat(balance);
}
if (nextbet==null) {
nextbet = previousbet;
}
if (balance>=target) {
//stop();
return;
}
if (balance>wild) {
wild = parseFloat(balance);
}
if (balance<min) {
min = parseFloat(balance);
}
var freak = ((balance-olderest).toFixed(8));
console.log("balance made");
console.log(freak);
console.log("biggest balance");
console.log(parseFloat(wild));
console.log("lowest balance");
console.log(parseFloat(min));
parseFloat(document.getElementById('pct_bet').value = (((nextbet*2)-nextbet).toFixed(8)));
parseFloat(document.getElementById('pct_profit').value = (((nextbet*2)-nextbet).toFixed(8)))
$('#a_lo').click();
}
setInterval(() => dobet(), 1200);