Incrementing a number in a div using Javascript

问题

I'm very new to Javascript, so I assume this is a stupid mistake.

function upvote() {
    var score = parseInt(document.getElementById('voteScore').innerHTML);
    score = score++;
    document.getElementById('voteScore').innerHTML = score;
}

The div named "voteScore" contains the number 46 only (no HTML or anything). I am attempting to grab the string, convert it to an int, increment it and put it back in the div.

回答1:

score++ increments score, you don't need to assign it back to score. Either remove the score = or change score++ to score+1.

来源：https://stackoverflow.com/questions/7893753/incrementing-a-number-in-a-div-using-javascript