Question 209423 in Javascript Question posted in
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Javascript – What is the Regular Expression For "Not Whitespace"

Since i try to used this regular expression

/names+([A-Za-z0-9]+(?:-[A-Za-z0-9]+)*[A-Za-z0-9])(?!S)/g;

my input that i want is for example:

  1. name test
  2. name test-name
  3. name test-name-2

but when i try to check this input it’s also allowed

  1. name test-name anytext

what i want is after test-name shouldn’t allowed any whitespaces or characters anymore

Tags:

5

Answers


  1. 0

    Hi maybe try something like
    names+([A-Za-z0-9]+(?:-[A-Za-z0-9]+)*[A-Za-z0-9])(?!S)(?! )

    I added (?! ) so it means that a space is not allowed after your string

    I testes it here

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  2. 0

    The regular expression for the opposite of whitespace (s) is S:

    public class main {
        public static void main(String[] args) {
            String name = "Stack Overflow is cool";
            //replace non whitespace with *
            String result = name.replaceAll("\S", "*");
            System.out.println(result);
        }
}

    The output of this is "***** ******** ** ****". Note that in Java, backspaces have to be escaped.

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  3. 0

    To my knowledge it is S (uppercase s). So you can try this:

    regex = /namesS+$/gm

    WIKIPEDIA Article for Regular Expressions

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  4. 0

    Try this instead:

    /^names+([A-Za-z0-9]+(?:-[A-Za-z0-9]+)*[A-Za-z0-9])(?:-[d]+)?$/

    I have checked the pattern with this test case.

    const regex = /^names+([A-Za-z0-9]+(?:-[A-Za-z0-9]+)*[A-Za-z0-9])(?:-[d]+)?$/;

const input1 = "name test";
const input2 = "name test-name";
const input3 = "name test-name-2";
const input4 = "test-name ";

console.log(regex.test(input1));  // Output: true
console.log(regex.test(input2));  // Output: true
console.log(regex.test(input3));  // Output: true
console.log(regex.test(input4));  // Output: false

    I hope it works for you!

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  5. 0 
    names{1}+([A-Za-z0-9]+(?:-[A-Za-z0-9]+)*[A-Za-z0-9])*(?:-+[A-Za-z0-9]+)(?!S)(?! )

    enter image description here
    I hope it works for you!

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