console.log("%cStop!","color: red; font-family: sans-serif; font-size: 4.5em; font-weight: bolder; text-shadow: #000 1px 1px;");

由于它支持CSS属性,我们甚至可以在其中“绘制”图像：

(function(url) {
  // Create a new `Image` instance
  var image = new Image();
 
  image.onload = function() {
    // Inside here we already have the dimensions of the loaded image
    var style = [
      // Hacky way of forcing image's viewport using `font-size` and `line-height`
      'font-size: 1px;','line-height: ' + this.height + 'px;',// Hacky way of forcing a middle/center anchor point for the image
      'padding: ' + this.height * .5 + 'px ' + this.width * .5 + 'px;',// Set image dimensions
      'background-size: ' + this.width + 'px ' + this.height + 'px;',// Set image URL
      'background: url('+ url +');'
     ].join(' ');
 
     console.log('%c',style);
  };
 
  // Actually loads the image
  image.src = url;
})('https://i.cloudup.com/Zqeq2GhGjt-3000x3000.jpeg');