javascript - 嵌套循环的问题

Question

总的来说，我对 javascript 和编码很陌生。

我试图在 Canvas 上以随机坐标绘制一系列圆圈，并尝试根据其他一些值确定这组圆圈的 fillStyle ，为简单起见，此处未包含这些值。谁能告诉我为什么我会在这里遇到无限循环？

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

使用两个单独的计数器变量。另外，缩进代码以反射(reflect)其结构。