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The constraint read-only property of the OverconstrainedError interface returns the constraint that was supplied in the constructor, meaning the constraint that was not satisfied.
A string.
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constraint |
63 | 79 | No | No | 50 | 11.1 | 63 | 63 | No | 46 | 11.3 | 8.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/OverconstrainedError/constraint