'innerHTML' Undefined

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1

I need help, I can’t make it work.

var valu=document.getElementsByClassName("user-coins-value middle-block")[0];
var yesno=confirm("You have access key ?");
if(yesno==true)
    {
    var enter_key=prompt("Enter access key",'Example: 43ML9923');
    if(enter_key==".")
        {
        alert("OK\nNotice in 5 seconds!");
        setTimeout(function()
            {
            var enter_coins=prompt("Enter value of coins",'Min: 1000, Max: 75000');
            var timer=setInterval(function()
                {
                var i=document.getElementsByClassName("user-coins-value middle-block")[0].innerHTML;
                i++;
                valu.innerHTML=i++;
                if(valu.innerHTML==enter_coins)
                    {
                    clearInterval(timer);
                    alert("It's all\nGood buy")
                }
            }
            ,25)
        }
        ,5000)
    }
    else
        {
        alert("Wrong ACESS KEY")
    }
}
javascript undefined

  • Where you are starting/declaring this variable i?

  • I declared above the first line, but forgot to copy it here.

  • I tested your code and it did not fail. Where is this error? Oh, I was in doubt about the i++, you wanted to do what there? start with 0 and increment each interval?

  • Yes, at each interval you are increasing the value. You are giving error here '' var i=Document.getElementsByClassName("user-Coins-value Middle-block")[0]. innerHTML; ''

1 answer

1

Your code is working perfectly, what you have to make sure is that the HTML does not contain any space or other character type that is not number inside. Example: if your code looks like this:

  <div class="user-coins-value middle-block">
     5
  </div>

Change to:

 <div class="user-coins-value middle-block">5</div>

  • He’s right, but he keeps making the mistake after entering the value of 1000 to 75000.

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