Change an image when input is given

Question

I have a small basic html code with JavaScript . All I want is when I type 3,it should show me an image as specified and for 9 accordingly. This is the demo. Visit http://jsbin.

Answer 1

You need to change the $('#cardImage')[0] to $('#cardImage').attr('src' , 'http://placehold.it/100x100/eee&text='+ num2img[n] +'.png'); as # will return one element replace See the jsfiddle http://jsfiddle.net/mailtoshebin/dMWmw/

var num2img = {
  "3":"visa",
  "9":"mastercard"
};

$('#num').on('input', function(){
  var val = this.value;
  if(val.length<=1){
     var n = this.value.charAt(0);
     if(val && num2img[n]!==undefined){
       $('#cardImage').attr('src' , 'http://placehold.it/100x100/eee&text='+ num2img[n] +'.png');
     }else{
       $('#cardImage')[0].src = 'http://placehold.it/100x100/cf5';
     }
  }
});