69 lines
2.3 KiB
Markdown
69 lines
2.3 KiB
Markdown
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---
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id: 56533eb9ac21ba0edf2244d2
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title: Comparison with the Inequality Operator
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challengeType: 1
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videoUrl: ''
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localeTitle: 与不等式算子的比较
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---
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## Description
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<section id="description">不等运算符（ <code>!=</code> ）与等于运算符相反。它意味着“不等于”并返回<code>false</code> ，其中相等性将返回<code>true</code> ， <em>反之亦然</em> 。与等式运算符一样，不等式运算符将在比较时转换数据类型的值。 <strong>例子</strong> <blockquote> 1！= 2 //是的<br> 1！=“1”//假<br> 1！='1'//假<br> 1！= true // false <br> 0！= false // false </blockquote></section>
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## Instructions
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<section id="instructions">在<code>if</code>语句中添加不等式运算符<code>!=</code> ，以便当<code>val</code>不等于<code>99</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>testNotEqual(99)</code>应返回“Equal”
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testString: 'assert(testNotEqual(99) === "Equal", "<code>testNotEqual(99)</code> should return "Equal"");'
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- text: <code>testNotEqual("99")</code>应该返回“Equal”
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testString: 'assert(testNotEqual("99") === "Equal", "<code>testNotEqual("99")</code> should return "Equal"");'
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- text: <code>testNotEqual(12)</code>应该返回“Not Equal”
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testString: 'assert(testNotEqual(12) === "Not Equal", "<code>testNotEqual(12)</code> should return "Not Equal"");'
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- text: <code>testNotEqual("12")</code>应该返回“Not Equal”
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testString: 'assert(testNotEqual("12") === "Not Equal", "<code>testNotEqual("12")</code> should return "Not Equal"");'
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- text: <code>testNotEqual("bob")</code>应返回“Not Equal”
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testString: 'assert(testNotEqual("bob") === "Not Equal", "<code>testNotEqual("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(/(?!!==)!=/), "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 testNotEqual(val) {
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if (val) { // Change 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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testNotEqual(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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