Check First Char In String

Question

I have input-box. I\'m looking for a way to fire-up alert() if first character of given string is equal to \'/\'...

var scream = $( \'#screameri         


        

Answer 1

Try this out:

$( '#screameria input' ).keyup(function(){ //when a user types in input box
    var scream = this.value;
    if ( scream.charAt( 0 ) == '/' ) {

      alert( 'Boom!' );

    }
})

Fiddle: http://jsfiddle.net/maniator/FewgY/

Answer 2

You need to add a keypress (or similar) handler to tell the browser to run your function whenever a key is pressed on that input field:

var input = $('#screameria input');
input.keypress(function() {
  var val = this.value;
  if (val && val.charAt(0) == '/') {
    alert('Boom!');
  }
});