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Description This property returns the number of code units in the string. JavaScript uses UTF-16 encoding, where each Unicode character may be encoded as one or two code units, so it's possible for the value returned by length to not match the actual number of Unicode characters in the string. Previous All HTML Attributes Next Definition and Usage The maxlength attribute specifies the maximum number of characters allowed in the element. Applies to The maxlength attribute can be used on the following elements: Examples Input Example An element with a maximum length of 10 characters: