72 lines
2.3 KiB
Markdown
72 lines
2.3 KiB
Markdown
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---
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id: 56533eb9ac21ba0edf2244d3
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title: Comparison with the Strict Inequality Operator
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challengeType: 1
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videoUrl: ''
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localeTitle: 与严格不等式算子的比较
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---
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## Description
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<section id="description">严格不等式运算符（ <code>!==</code> ）与严格相等运算符的逻辑相反。它意味着“严格不等于”并返回<code>false</code> ，其中严格相等将返回<code>true</code> ， <em>反之亦然</em> 。严格的不等式不会转换数据类型。 <strong>例子</strong> <blockquote> 3！== 3 //假<br> 3！=='3'//是的<br> 4！== 3 //是的</blockquote></section>
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## Instructions
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<section id="instructions">将<code>strict inequality operator</code>添加到<code>if</code>语句，以便当<code>val</code>不严格等于<code>17</code>时，函数将返回“Not Equal” </section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: <code>testStrictNotEqual(17)</code>应返回“Equal”
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testString: 'assert(testStrictNotEqual(17) === "Equal", "<code>testStrictNotEqual(17)</code> should return "Equal"");'
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- text: <code>testStrictNotEqual("17")</code>应返回“Not Equal”
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testString: 'assert(testStrictNotEqual("17") === "Not Equal", "<code>testStrictNotEqual("17")</code> should return "Not Equal"");'
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- text: <code>testStrictNotEqual(12)</code>应该返回“Not Equal”
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testString: 'assert(testStrictNotEqual(12) === "Not Equal", "<code>testStrictNotEqual(12)</code> should return "Not Equal"");'
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- text: <code>testStrictNotEqual("bob")</code>应返回“Not Equal”
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testString: 'assert(testStrictNotEqual("bob") === "Not Equal", "<code>testStrictNotEqual("bob")</code> should return "Not Equal"");'
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- text: 你应该使用<code>!==</code>运算符
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testString: 'assert(code.match(/(val\s*!==\s*\d+)|(\d+\s*!==\s*val)/g).length > 0, "You should use the <code>!==</code> operator");'
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='js-seed'>
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```js
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// Setup
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function testStrictNotEqual(val) {
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// Only Change Code Below this Line
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if (val) {
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// Only Change Code Above this Line
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return "Not Equal";
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}
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return "Equal";
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}
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// Change this value to test
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testStrictNotEqual(10);
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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```js
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// solution required
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```
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</section>
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