我试图找出一个数字是否是一个完美的数字,但我无法正确打印它。数字6、496、8128是完美数字,但是当我输入这些数字时,它会从var res2而不是var res1打印。这是什么问题,任何人都可以帮忙吗?



function perfectNo(number) {
  var temp = 0;
  var res1 = "It is a perfect number";
  var res2 = "It is not a perfect number";
  for (var i = 1; i <= number / 2; i++) {
    if (number % i == 0) {
      temp += i;
    }
  }

  if (temp == number && temp != 0) {
    document.getElementById("results").innerHTML = res1;
  } else {
    document.getElementById("results").innerHTML = res2;
  }
}

<input id="num">
<input type="button" onclick="perfectNo()" value="check">
<br>
<p>Answer:</p>
<p id="results"></p>
<br>

最佳答案

尝试:

var number = document.getElementById("num").value;


像这样 :



function perfectNo() {
  var number = document.getElementById("num").value;
  console.log(number);
  var temp = 0;
  var res1 = "It is a perfect number";
  var res2 = "It is not a perfect number";
  for (var i = 1; i <= number / 2; i++) {
    if (number % i == 0) {
      temp += i;
    }
  }

  if (temp == number && temp != 0) {
    document.getElementById("results").innerHTML = res1;
  } else {
    document.getElementById("results").innerHTML = res2;
  }
}

<input id="num">
<input type="button" onclick="perfectNo()" value="check">
<br>
<p>Answer:</p>
<p id="results"></p>
<br>

关于javascript - 尝试使用getElementById在Javascript中打印正确的答案,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/39555459/

10-12 12:37
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