2.4 KiB
2.4 KiB
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,小于或等于运算符会转换数据类型。
例如
4 <= 5
'7' <= 7
5 <= 5
3 <= 2
'8' <= 4
按顺序,这些表达式会返回 true
、true
、true
、false
和 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');
应该使用 <=
运算符至少两次
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";
}