15 lines
457 B
Markdown
15 lines
457 B
Markdown
---
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title: Chaijs Assertexpression Message
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localeTitle: Chaijs AssertExpression消息
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---
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[@param](/users/param) {Mixed}表达式来测试真实性
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* [@param](/users/param) {String}消息显示错误
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编写自己的测试表达式。
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```
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assert('foo' !== 'bar', 'foo is not bar');
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assert(Array.isArray(<a href='http://chaijs.com/api/assert/' target='_blank' rel='nofollow'>]), 'empty arrays are arrays');
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```
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细节：\[http://chaijs.com/api/assert/ |