Also note the use of _call.call(_toString, original) rather than simply original.toString(). This is because original.toString might itself be hooked by the time spoof is called. By holding cached references to Function.prototype.call and Function.prototype.toString at the very beginning of the script (before any page code runs), and invoking them via those cached references, the spoof function is immune to any tampering that might have happened in the interim. It’s eating its own tail in the most delightful way.
LaunchDarkly(11 alt)
，这一点在爱思助手下载最新版本中也有详细论述
Thomas Clements’ eyes begin dancing as he recalls in vivid detail his first trip to Highbury. It was 1995 and Ian Wright was among the scorers as QPR were defeated. Clements – named after Michael Thomas, scorer of Arsenal’s decisive second goal against Liverpool in their 1989 title decider – points to his dad, Kevin, standing a metre away. “I was sat on his shoulders in the North Bank,” he says.
6. Shoresy, Season 5