How Can I Check In Javascript Inputbox For Empty Space Using "enter"

How can I check my input for a bunch of new lines, I know it's not majorly practical, but I wan't to be 100% my inputs are not breakable. Hence how can I check if an input box in j

Solution 1:

You can use Regex:

if (str.replace(/[\s\n\r]+/g, "") != "")
{
    // if you remove spaces and line breaks, it doesn't equal nothing
}

EDIT - it should be faster

if (/\S/.test(str))
{
    // found something other than spaces or line breaks// "\S" should match any character that is not a space or line break
}

Solution 2:

You can use trim and check the length.

// it is a bunch of spacesif(inputValue.trim().length == 0){ /* ... */}

Solution 3:

A space is just a bunch of whitespaces. So you can check with the following method:

if(s.indexOf(' ') >= 0) returntrue;

You might also want to trim your input instead of checking for the potential presence of whitespaces:

 s.trim();