Javascript String splice( idx, rem, s )

String.prototype.splice = function( idx, rem, s ) {
  return (this.slice(0,idx) + s + this.slice(idx + Math.abs(rem)));
};

String.prototype.splice = function (idx, rem, s) {
    return (this.slice(0, idx) + s + this.slice(idx + Math.abs(rem)));
};

/**/* w  w w  . java2 s.c o m*/
 * Convert Canvas into Image
 * @param {Canvas} canvas
 * @returns {Image}
 */
function convertCanvasToImage (canvas) {
 var image = new Image();
 image.src = canvas.toDataURL("image/png");
 return image;
}

/**
 * Convert Image into Canvas
 * @param {Image} image
 * @returns {Canvas}
 */
function convertImageToCanvas (image) {
 var canvas = document.createElement("canvas");
 canvas.width = image.width;
 canvas.height = image.height;
 canvas.getContext("2d").drawImage(image, 0, 0);

 return canvas;
}