$("#uploadImage").on("change", function(){    // Get a reference to the fileList    var files = !!this.files ? this.files : [];     // If no files were selected, or no FileReader support, return    if (!files.length || !window.FileReader) return;     // Only proceed if the selected file is an image    if (/^image/.test( files[0].type)){         // Create a new instance of the FileReader        var reader = new FileReader();         // Read the local file as a DataURL        reader.readAsDataURL(files[0]);         // When loaded, set image data as background of div        reader.onloadend = function(){         $("#uploadPreview").css("background-image", "url("+this.result+")");                }     } });