87 lines
1.5 KiB
Markdown
87 lines
1.5 KiB
Markdown
![]() |
---
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id: 587d7b7e367417b2b2512b24
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title: Use the Conditional (Ternary) Operator
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challengeType: 1
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forumTopicId: 301181
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dashedName: use-the-conditional-ternary-operator
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---
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# --description--
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The <dfn>conditional operator</dfn>, also called the <dfn>ternary operator</dfn>, can be used as a one line if-else expression.
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The syntax is:
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`condition ? expression-if-true : expression-if-false;`
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The following function uses an if-else statement to check a condition:
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```js
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function findGreater(a, b) {
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if(a > b) {
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return "a is greater";
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}
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else {
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return "b is greater";
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}
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}
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```
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This can be re-written using the `conditional operator`:
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```js
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function findGreater(a, b) {
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return a > b ? "a is greater" : "b is greater";
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}
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```
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# --instructions--
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Use the `conditional operator` in the `checkEqual` function to check if two numbers are equal or not. The function should return either "Equal" or "Not Equal".
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# --hints--
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`checkEqual` should use the `conditional operator`
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```js
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assert(/.+?\s*?\?\s*?.+?\s*?:\s*?.+?/.test(code));
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```
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`checkEqual(1, 2)` should return "Not Equal"
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```js
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assert(checkEqual(1, 2) === 'Not Equal');
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```
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`checkEqual(1, 1)` should return "Equal"
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```js
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assert(checkEqual(1, 1) === 'Equal');
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```
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`checkEqual(1, -1)` should return "Not Equal"
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```js
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assert(checkEqual(1, -1) === 'Not Equal');
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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 checkEqual(a, b) {
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}
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checkEqual(1, 2);
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```
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# --solutions--
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```js
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function checkEqual(a, b) {
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return a === b ? "Equal" : "Not Equal";
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}
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```
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