2021-05-05 10:13:49 -07:00
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---
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id: 56533eb9ac21ba0edf2244d5
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title: 大於或等於運算符
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challengeType: 1
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videoUrl: 'https://scrimba.com/c/c6KBqtV'
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forumTopicId: 16785
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dashedName: comparison-with-the-greater-than-or-equal-to-operator
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---
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# --description--
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使用大於等於運算符(`>=`)來比較兩個數字的大小。 如果大於等於運算符左邊的數字比右邊的數字大或者相等,會返回 `true`。 否則,會返回 `false`。
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與相等運算符相似,大於等於運算符在比較的時候會轉換值的數據類型。
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**例如:**
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```js
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2022-03-21 22:25:58 +05:30
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6 >= 6 // true
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7 >= '3' // true
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2 >= 3 // false
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'7' >= 9 // false
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2021-05-05 10:13:49 -07:00
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```
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# --instructions--
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添加大於等於運算符到指定行,使得函數的返回語句有意義。
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# --hints--
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2022-03-21 22:25:58 +05:30
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`testGreaterOrEqual(0)` 應該返回字符串 `Less than 10`
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2021-05-05 10:13:49 -07:00
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```js
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assert(testGreaterOrEqual(0) === 'Less than 10');
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```
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2022-03-21 22:25:58 +05:30
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`testGreaterOrEqual(9)` 應該返回字符串 `Less than 10`
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2021-05-05 10:13:49 -07:00
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```js
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assert(testGreaterOrEqual(9) === 'Less than 10');
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```
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2022-03-21 22:25:58 +05:30
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`testGreaterOrEqual(10)` 應該返回字符串 `10 or Over`
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2021-05-05 10:13:49 -07:00
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```js
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assert(testGreaterOrEqual(10) === '10 or Over');
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```
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2022-03-21 22:25:58 +05:30
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`testGreaterOrEqual(11)` 應該返回字符串 `10 or Over`
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2021-05-05 10:13:49 -07:00
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```js
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assert(testGreaterOrEqual(11) === '10 or Over');
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```
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2022-03-21 22:25:58 +05:30
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`testGreaterOrEqual(19)` 應該返回字符串 `10 or Over`
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2021-05-05 10:13:49 -07:00
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```js
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assert(testGreaterOrEqual(19) === '10 or Over');
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```
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2022-03-21 22:25:58 +05:30
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`testGreaterOrEqual(100)` 應該返回字符串 `20 or Over`
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2021-05-05 10:13:49 -07:00
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```js
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assert(testGreaterOrEqual(100) === '20 or Over');
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```
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2022-03-21 22:25:58 +05:30
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`testGreaterOrEqual(21)` 應該返回字符串 `20 or Over`
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2021-05-05 10:13:49 -07:00
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```js
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assert(testGreaterOrEqual(21) === '20 or Over');
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```
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2022-03-21 22:25:58 +05:30
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你應該使用 `>=` 運算符至少兩次。
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2021-05-05 10:13:49 -07:00
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```js
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assert(code.match(/val\s*>=\s*('|")*\d+('|")*/g).length > 1);
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```
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# --seed--
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## --seed-contents--
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```js
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function testGreaterOrEqual(val) {
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if (val) { // Change this line
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return "20 or Over";
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}
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if (val) { // Change this line
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return "10 or Over";
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}
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return "Less than 10";
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}
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testGreaterOrEqual(10);
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```
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# --solutions--
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```js
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function testGreaterOrEqual(val) {
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if (val >= 20) { // Change this line
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return "20 or Over";
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}
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if (val >= 10) { // Change this line
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return "10 or Over";
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}
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return "Less than 10";
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}
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```
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