Is number by regex - Node.js Regular expression

Node.js examples for Regular expression:Validation

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Description

Is number by regex

Demo Code

function isNumber(val) {
  var exp = new RegExp("^[+-]?[0-9]*[.]?[0-9]*([eE][+-]?[0-9]+)?$","m"); 
  return exp.test(val);
}

var decimaleRegexp = new RegExp("^[+-]?[0-9]*[.][0-9]*([eE][+-]?[0-9]+)?$","m"); 
var bibcodeRegexp  = new RegExp(/^[12][089]\d{2}[A-Za-z][A-Za-z0-9&][A-Za-z0-9&.]{2}[A-Za-z0-9.][0-9.][0-9.BCRU][0-9.]{2}[A-Za-z0-9.][0-9.]{4}[A-Z:.]$/);

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