prototype_r.js 今天药忘吃喽~ 2022-07-15 12:11 112阅读 0赞 function Point(x,y)\{ this.x=x; this.y=y; \} var p=new Point(1,1); Point.prototype.r=function()\{ return Math.sqrt(this.x\*this.x+this.y\*this.y); \}; console.log(p.r()); var q=new Point(1,1); console.log(q.r()); "D:\\Program Files\\JetBrains\\WebStorm 8.0.6\\bin\\runnerw.exe" "C:\\Program Files\\nodejs\\node.exe" prototype\_r.js 1.4142135623730951 1.4142135623730951 Process finished with exit code 0
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