freeCodeCamp/curriculum/challenges/chinese/02-javascript-algorithms-and-data-structures/basic-javascript/comparison-with-the-less-than-or-equal-to-operator.md

id, title, challengeType, videoUrl, forumTopicId, dashedName

id	title	challengeType	videoUrl	forumTopicId	dashedName
56533eb9ac21ba0edf2244d7	小于或等于运算符	1	https://scrimba.com/c/cNVR7Am	16788	comparison-with-the-less-than-or-equal-to-operator

--description--

使用小于等于运算符（<=）比较两个数字的大小。如果在小于等于运算符左边的数字小于或者等于右边的数字，它会返回true。如果在小于等于运算符左边的数字大于右边的数字，它会返回false。与相等运算符类似，小于等于运算符会转换数据类型。

例如

4   <= 5  // true
'7' <= 7  // true
5   <= 5  // true
3   <= 2  // false
'8' <= 4  // false

--instructions--

添加小于等于运算符到指定行，使得函数的返回语句有意义。

--hints--

testLessOrEqual(0)应该返回 "Smaller Than or Equal to 12"。

assert(testLessOrEqual(0) === 'Smaller Than or Equal to 12');

testLessOrEqual(11)应该返回 "Smaller Than or Equal to 12"。

assert(testLessOrEqual(11) === 'Smaller Than or Equal to 12');

testLessOrEqual(12)应该返回 "Smaller Than or Equal to 12"。

assert(testLessOrEqual(12) === 'Smaller Than or Equal to 12');

testLessOrEqual(23)应该返回 "Smaller Than or Equal to 24"。

assert(testLessOrEqual(23) === 'Smaller Than or Equal to 24');

testLessOrEqual(24)应该返回 "Smaller Than or Equal to 24"。

assert(testLessOrEqual(24) === 'Smaller Than or Equal to 24');

testLessOrEqual(25)应该返回 "More Than 24"。

assert(testLessOrEqual(25) === 'More Than 24');

testLessOrEqual(55)应该返回 "More Than 24"。

assert(testLessOrEqual(55) === 'More Than 24');

你应该使用<=运算符至少两。

assert(code.match(/val\s*<=\s*('|")*\d+('|")*/g).length > 1);

--seed--

--seed-contents--

function testLessOrEqual(val) {
  if (val) {  // Change this line
    return "Smaller Than or Equal to 12";
  }

  if (val) {  // Change this line
    return "Smaller Than or Equal to 24";
  }

  return "More Than 24";
}

testLessOrEqual(10);

--solutions--

function testLessOrEqual(val) {
  if (val <= 12) {  // Change this line
    return "Smaller Than or Equal to 12";
  }

  if (val <= 24) {  // Change this line
    return "Smaller Than or Equal to 24";
  }

  return "More Than 24";
}