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Javascript check if string contains only letters and spaces

JavaScript test Method: This method tests for a pattern in a string. This method returns true if match is found, otherwise it returns false. Parameters: This function accepts single parameter str which is required.

Check if a string contains only alphabets in Java using Regex

It specifies the string which to be searched. Example 1: This example checks for the non-digit string by using RegExp. Example 2: This example checks for the non-digits string by using RegExp.

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javascript check if string contains only letters and spaces

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javascript check if string contains only letters and spaces

How to get the coordinates of a mouse click on a canvas element? Given a string and the task is to check whether it contains only digits or not. Check if string contains only digits. How to check a string is entirely made up of the same substring in JavaScript? How to check a date is valid or not using JavaScript? Check out this Author's contributed articles. Load Comments.Given a string, the task is to check whether a string contains only alphabets or not using Regex in Java.

In this article, the characters of the string are checked one by one using Regex. Regular Expressions or Regex is an API for defining String patterns that can be used for searching, manipulating and editing a text.

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It is widely used to define a constraint on strings such as a password. Regular Expressions are provided under java. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute. See your article appearing on the GeeksforGeeks main page and help other Geeks. Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.

Writing code in comment? Please use ide. How to iterate over a TreeMap in Java? Recommended Posts: Check if a string contains only alphabets in Java using Lambda expression Check if a string contains only alphabets in Java using ASCII values Extracting each word from a String using Regex in Java Get the first letter of each word in a string using regex in Java Print first letter of each word in a string using regex Extract maximum numeric value from a given string Set 2 Regex approach Java Removing whitespaces using Regex Regex Boundary Matchers in Java Count occurrences of a given character using Regex in Java Java Date format validation using Regex Check for string rotation in Java Check if a String starts with any of the given prefixes in Java Program to check if the String is Empty in Java Program to check if a String in Java contains only whitespaces Java program to check whether a string is a Palindrome.

Check out this Author's contributed articles. Load Comments.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. For some reason, I originally read your question as "How do I see if a string contains only spaces?

But as CrazyTrain points out, that's not what the question says. I'll leave it, though, just in case If you'd like, you can also watch in this linkhow it would match against some sample inputs. Learn more. Detect if string contains any spaces Ask Question. Asked 6 years, 9 months ago. Active 5 months ago. Viewed 79k times. How do I detect if a string has any whitespace characters? The below only detects actual space characters.

I need to check for any kind of whitespace. Crowder k gold badges silver badges bronze badges. Malcr Malcr 7, 9 9 gold badges 39 39 silver badges 56 56 bronze badges. What you have will detect any spaces characters, not just between words. But do you want to include other types of white space? Only spaces between words?

That's where spaces live. Please clarify your specific problem or add additional details to highlight exactly what you need. I want to detect if the string contains ANY white spaces. Active Oldest Votes. What you have will find a space anywhere in the string, not just between words. Crowder T. This will also match empty string.

HamZa: I was assuming that was desired. Crowder Jul 12 '13 at Or you can grab your safari hat and machete and delve into the specificationbut it's a jungle in there, but this is one of the tamer parts of it.Just if used, no special characters and no blank spaces. Do you want to include accented characters? I would want and all letters, underscore, hyphen, and a period allowed, nothing else Special characters like! And no blank spaces. For the moment, I will assume you mean the Latin alphabet a-z, A-Z.

You can extend this from there, if need be. The HTML pattern attribute can take them, or we can handle it in Javascript if you want to do more complex things than simply preventing form submission. So we can use that. We want to add the hyphen, and period.

Period is a gotcha character, because it has a special meaning. Hyphen can cause issues too, because it can be used to represent a range of things As in A-Z. Regex defines a character set by putting square brackets around them. If this function returns null, then the string complies with your rules. If it returns anything else, there was one or more illegal characters in it.

Paul teaching me things here too. I tried the code in your demo, works fine. I substituted to my user name, added the required pattern. Its the same sort of thing here too. That is not the only input that I have. I also have the following example with other alerts, etc:. Is it outside of a form? A form with a submit button tends to be a good guarantee that things will work. The validation JS works fine. Would the onclick as below make a difference for this particular JS?

Can you link us to a test page for the purpose of troubleshooting? I appreciate your offer of assistance though. Let me further look at it on my side my stripping out the rest of the code and first check the results. Will let you know my conclusions. Thank you.

How is that validate function being triggered? Not sure if I understand. Below is what I am using and the form submits just fine and validates the fields. Are you suggesting it would be best to make a change? JS with no special characters and blank spaces JavaScript. Any help would be appreciated. Thank You. You have a good point. A regular expression will be the perfect answer for this.The above code has been tested in the following browsers.

Home Categories. AlphaNumeric characters to filter out all unwanted characters using JavaScript. HTML Markup. When the Button is clicked, the Validate JavaScript function is called.

Thus if the String i. Alphabets and Numbers. Browser Compatibility. Related Articles. Add Comments. Thank you for the feedback. The comment is now awaiting moderation.

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javascript check if string contains only letters and spaces

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How can I make a distinction between an empty string and a string which contains only spaces?

Check if the String contains only unicode letters, digits or space in Java

How can I detect a string which contain only spaces? To achieve this you can use a Regular Expression to remove all the whitespace in the string. If the length of the resulting string is 0then you can be sure the original only contained whitespace. Try this:. Removing the whitespace from a String can be done using String. This method can be used to check if a String contains only spaces and it can be invoked every time like this:.

If the resulting value is 0 you know you have a string that contains only spaces. You can read more about trim here. Learn more. How to detect string which contains only spaces? Ask Question. Asked 7 years, 11 months ago. Active 5 months ago. Viewed 84k times. Abdullah Ilgaz 1 1 gold badge 12 12 silver badges 31 31 bronze badges.

C++ Character is Digit, Uppercase, Lowercase, Special Character

Luca Luca Trim it and check that the length is zero. Are you using jQuery? Remove all white space and see whether the string length is 0? Or use a regular expression to match only whitespace strings Active Oldest Votes. Well, string only contained whitespace. You can Trim your String value by creating a trim function for your Strings.

Shehzad Shehzad 2, 12 12 silver badges 20 20 bronze badges. Extending built-in objects' prototypes is a bad idea. Sign up or log in Sign up using Google.Code to validate that string contains only letters through char isLetter property. IsNullOrEmpty inputString.

IsLetter inputString[i]. Validate that string contains only alphabets letters as well as space character through regular expression.

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