Check image width and height

Check image width and height

by abuhamzah

HTML

<input type="file" id="file" onchange="this.files[0]" />

JavaScript

var _URL = window.URL || window.webkitURL;
var file, img; 
  
$('input[type=file]').change(function (obj) {
    alert("hola");
 
     console.log(file);
     
    if ((file = this.files[0])) {
        img = new Image();
        img.onload = function() {
            alert(this.width + " " + this.height);
            if (this.width > 400) {
       					alert('can not upload 400');
              return true;
       			}
        };
        img.onerror = function() {
            alert( "not a valid file: " + file.type);
        }; 
       img.src = _URL.createObjectURL(file); 
 
    }
    
   });