嵌套循环问题

Question

总的来说，我是 javascript 和编码的新手。

我正在尝试在 canvas 上以随机坐标绘制一系列圆圈，并且我正在尝试根据其他一些值确定这组圆圈的 fillStyle，这些值不是为简单起见包含在此处。任何人都可以告诉我为什么我在这里得到似乎是无限循环的东西吗？

for (var counter = 1; counter <= 30; counter++) {
  var xCenter = 154;
  var yCenter = 270;
  var accuracyMod = (300 + 800) * 0.0013;

  var xMax = (xCenter + (100 - 50) * accuracyMod);
  var xMin = (xCenter - (100 - 50) * accuracyMod);
  var yMax = ((yCenter + (100 - 50) * accuracyMod)) - (100 - 50);
  var yMin = ((yCenter - (100 - 50) * accuracyMod)) - (100 - 50);

  function randomIntFromInterval(min, max) {
    return Math.floor(Math.random() * (max - min + 1) + min);
  }

  console.log(randomIntFromInterval(xMin, xMax), (randomIntFromInterval(yMin, yMax)));

  var stroke = "color";
  var fill = "color";
  var intense = 85;
  for (var counter = 1; counter <= 7; counter++) {
    if (intense < 5) {
      stroke = "#fffdfc";
      fill = "#fffdfc";
    } else if (intense <= 20) {
      stroke = "#ffebd7";
      fill = "#ffebd7";
    } else if (intense <= 40) {
      stroke = "#ffae5f";
      fill = "#ffae5f";
    } else if (intense <= 60) {
      stroke = "#ff7402";
      fill = "#ff7402";
    } else if (intense <= 80) {
      stroke = "#e25610";
      fill = "#e25610";
    } else if (intense <= 95) {
      stroke = "#b84452";
      fill = "#b84452";
    } else {
      stroke = "#ac3f65";
      fill = "#ac3f65";
    }

  }
}

Answer 1

是的，因为您在外循环和内循环中都使用 counter 作为迭代变量。内部循环每次都会在 8 离开 counter。外环测试永远不会失败，所以它会继续。

使用两个单独的计数器变量。此外，缩进代码以反映其结构。

嵌套循环问题

Issue with a Nested Loop

javascript

loops

for-loop

infinite