正则表达式只允许不会断开链接的字符

Question

Anybody can help me with regular expression which will only accept alphabetical letters from English alphabet and numbers without whitespaces ( ÖÜÕÖ and similar characters + whitespaces will break the HTML link this thing is creating )? I currently have : /[A-Za-z ]\\S+$/ but this will allow whitespaces and ÖÜÄ and similar at the beggining.

function validatenumber(el) {
   var regex = /[A-Za-z ]\S+$/;    
   if( !regex.test(el.value) ) {
      alert('invalid value');
  }else{
          alert('correct value'); 
  }
}

http://jsfiddle.net/qd7BL/1375/ Here's a fiddle.

Answer 1

Try

/^\w+$/

It'll allow only a non empty string, containing english alphabet letter, both cases, underscore and digits in a string.

Answer 2

 /^[A-Za-z0-9]+$/ 

Solved the problem, although I should probably think is more through as much more elements are allowed in link.

Also, the best solution was to use Slugify, a plugin for jQuery which will make the input correct format.