Javascript String Length Validation

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Javascript String Length Validation

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JavaScript String Length Webinuse

How to validate a text string using javascript Ask Question Asked 9 years 11 months ago Modified 9 years 11 months ago Viewed 17k times 1 So I want to create a prompt that asks for a clients name I want to make sure it is formatted in this way Last name first name middle initial and no name longer than 20 characters String length validation in JavaScript is used to make sure that number of characters entered in a specified field will be restricted. For example name field should have a length of 8-10 characters only. Example

Javascript String Length

Javascript String Length Validation3 Answers Sorted by: 1 Use .length to check input string's length and if it is more than 10 just set the value of div with id msg. And then return so function does not run anymore. if (ref_code.length >10) { $ ("#msg").val ("Some error message"); return; } Share Improve this answer Follow answered Sep 11, 2015 at 5:51 Imab Asghar 316 1 7 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

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