2.3 KiB
2.3 KiB
id, title, challengeType, videoUrl, localeTitle
id | title | challengeType | videoUrl | localeTitle |
---|---|---|---|---|
587d7b7e367417b2b2512b21 | Use Multiple Conditional (Ternary) Operators | 1 | 使用多个条件(三元)运算符 |
Description
conditional operator
。您也可以将它们链接在一起以检查多种条件。以下函数使用if,else if和else语句来检查多个条件: function findGreaterOrEqual(a,b){可以使用多个
if(a === b){
返回“a和b相等”;
}
否则如果(a> b){
返回“a更大”;
}
其他{
返回“b更大”;
}
}
conditional operators
重写上述函数: function findGreaterOrEqual(a,b){
返回(a === b)? “a和b相等”:(a> b)? “a更大”:“b更大”;
}
Instructions
checkSign
函数中使用多个conditional operators
来检查数字是正数,负数还是零。 Tests
tests:
- text: <code>checkSign</code>应该使用多个<code>conditional operators</code>
testString: 'assert(/.+?\s*?\?\s*?.+?\s*?:\s*?.+?\s*?\?\s*?.+?\s*?:\s*?.+?/gi.test(code), "<code>checkSign</code> should use multiple <code>conditional operators</code>");'
- text: <code>checkSign(10)</code>应该返回“positive”。请注意,资本化很重要
testString: 'assert(checkSign(10) === "positive", "<code>checkSign(10)</code> should return "positive". Note that capitalization matters");'
- text: <code>checkSign(-12)</code>应返回“否定”。请注意,资本化很重要
testString: 'assert(checkSign(-12) === "negative", "<code>checkSign(-12)</code> should return "negative". Note that capitalization matters");'
- text: <code>checkSign(0)</code>应返回“零”。请注意,资本化很重要
testString: 'assert(checkSign(0) === "zero", "<code>checkSign(0)</code> should return "zero". Note that capitalization matters");'
Challenge Seed
function checkSign(num) {
}
checkSign(10);
Solution
// solution required