Javascript method to check for digits within a string (validation of input data)

Question

Im trying to implement a validation for an input field in IBM BPM. Im not really familiar with java script but I try to get method that returns ture if a string contains any numbers.

awdadw = valid
awdawd2d = invalid

I tried this method:

function hasNumbers(t)
{
    var pattern=new RegExp("^[A-Za-z]+$"); 
    return pattern.test(t); // true if string. Returns false for numbers
}

When I try this function, it says that method / variable RegExp is unknown. Since it is rather basci stuff I hope to get some sources where this topic is explained.

Your code work for me in FF12 (https://jsfiddle.net/k7x2mn1e/). — Nyamiou The Galeanthrope, Sep 25 '15 at 15:53
Follow this: http://stackoverflow.com/questions/5778020/check-whether-an-input-string-contains-number — Beroza Paul, Sep 25 '15 at 16:00

yardie · Accepted Answer · 2015-09-25T17:24:05.840

2

You can use this:

function validate(){    
var re = /^[A-Za-z]+$/;
if(re.test(document.getElementById("inputID").value))
   alert('Valid Name.');
else
   alert('Invalid Name.');      
  }

edited Sep 25 '15 at 17:24

answered Sep 25 '15 at 15:49

yardie

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worked for me thanks. but I modified it a bid for my needs – Julian Herbold Sep 25 '15 at 17:11
but this code then does not allow "-" which is necessary for some names. How can I build this function, to allow this? – Julian Herbold Sep 28 '15 at 14:49

score 0 · Answer 2 · edited Sep 28 '15 at 15:54

0

Based on adre3wap this worked for me:

function validate(t){
  var re = /^[A-Za-z]+$/;
  if(re.test(t))
     return false;
  else
     return true;
}

edited Sep 28 '15 at 15:54

yardie

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answered Sep 25 '15 at 17:17

Julian Herbold

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Javascript method to check for digits within a string (validation of input data)

2 Answers2