21 lines
541 B
Markdown
21 lines
541 B
Markdown
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---
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title: Promise Reject
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---
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## Promise Reject
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A ```Promise.reject``` function returns an error condition to the calling function. It takes a single parameter, an Error object or value, as the reason for rejection.
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Chaining a catch function at the end of a Promise caller will allow you to catch the error condition.
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```javascript
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promiseCallingFunction(paramList)
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.then( ... )
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...
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.then( ... )
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.catch( function(err) { // catch function
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/*
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* this is where you can access the reason for the rejection
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*/
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});
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```
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