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Jul 26th, 2017
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  1. String.prototype.getWidth = function(font) {
  2.   var f = font || '12px arial',
  3.       o = $('<div>' + this + '</div>')
  4.             .css({'position': 'absolute', 'float': 'left', 'visibility': 'hidden', 'font': f})
  5.             .appendTo($('body')),
  6.       w = o.width();
  7.        
  8.       o.remove();
  9.  
  10.   return w;
  11. }
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