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id	title	challengeType	videoUrl	forumTopicId	dashedName
56533eb9ac21ba0edf2244d7	小於或等於運算符	1	https://scrimba.com/c/cNVR7Am	16788	comparison-with-the-less-than-or-equal-to-operator

--description--

使用小於等於運算符（<=）比較兩個數字的大小。如果在小於等於運算符左邊的數字小於或者等於右邊的數字，它會返回 true。如果在小於等於運算符左邊的數字大於右邊的數字，它會返回 false。與相等運算符類似，小於或等於運算符會轉換數據類型。

例如

4   <= 5
'7' <= 7
5   <= 5
3   <= 2
'8' <= 4

按順序，這些表達式會返回 true、true、true、false 和 false。

--instructions--

添加小於等於運算符到指定行，使得函數的返回語句有意義。

--hints--

testLessOrEqual(0) 應該返回 Smaller Than or Equal to 12

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

testLessOrEqual(11) 應該返回 Smaller Than or Equal to 12

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

testLessOrEqual(12) 應該返回 Smaller Than or Equal to 12

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

testLessOrEqual(23) 應該返回 Smaller Than or Equal to 24

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

testLessOrEqual(24) 應該返回 Smaller Than or Equal to 24

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

testLessOrEqual(25) 應該返回 More Than 24

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

testLessOrEqual(55) 應該返回 More Than 24

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

應該使用 <= 運算符至少兩次

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";
}

2.4 KiB Raw Blame History