JAVASCRIPT

javascript regex check if string is empty

function IsEmptyOrWhiteSpace(str) {
    return (str.match(/^s*$/) || []).length > 0;
}

regex for check if string is only empty or whitespace javascript

//empty string or white space
function hasWhiteSpace(value) {
  return /^s*$/.test(value);
}

// empty string or string with white space 
function hasWhiteSpace(value) {
  return /^$|s+/.test(value);
 }