62 lines
2.1 KiB
Markdown
62 lines
2.1 KiB
Markdown
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---
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id: 587d7b7e367417b2b2512b22
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title: Use the parseInt Function with a Radix
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challengeType: 1
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videoUrl: ''
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localeTitle: 将parseInt函数与Radix一起使用
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---
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## Description
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<section id="description"> <code>parseInt()</code>函数解析字符串并返回一个整数。它需要一个基数的第二个参数，它指定字符串中数字的基数。基数可以是2到36之间的整数。函数调用如下： <code>parseInt(string, radix);</code>这是一个例子： <code>var a = parseInt("11", 2);</code>基数变量表示“11”在二进制系统或基数2中。此示例将字符串“11”转换为整数3。 </section>
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## Instructions
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<section id="instructions">在<code>convertToInteger</code>函数中使用<code>parseInt()</code> ，以便将二进制数转换为整数并返回它。 </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>convertToInteger</code>应该使用<code>parseInt()</code>函数
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testString: 'assert(/parseInt/g.test(code), "<code>convertToInteger</code> should use the <code>parseInt()</code> function");'
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- text: <code>convertToInteger("10011")</code>应该返回一个数字
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testString: 'assert(typeof(convertToInteger("10011")) === "number", "<code>convertToInteger("10011")</code> should return a number");'
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- text: <code>convertToInteger("10011")</code>应该返回19
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testString: 'assert(convertToInteger("10011") === 19, "<code>convertToInteger("10011")</code> should return 19");'
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- text: <code>convertToInteger("111001")</code>应该返回57
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testString: 'assert(convertToInteger("111001") === 57, "<code>convertToInteger("111001")</code> should return 57");'
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- text: <code>convertToInteger("JamesBond")</code>应该返回NaN
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testString: 'assert.isNaN(convertToInteger("JamesBond"), "<code>convertToInteger("JamesBond")</code> should return NaN");'
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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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function convertToInteger(str) {
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}
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convertToInteger("10011");
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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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