怎么修改变量本身和引用呢?

[snowman]

改变变量名 n -> number:

// before
function square(n) {
  return n * n;
}

var n = {};
n.n = square(10);

// after
function square(number) {
  return number * number;
}

var n = {};
n.n = square(10); 

[eyis]

是这个意思么？
https://play.gogocode.io/#code/N4IglgdgDgrgLgYQPYBMCmIBcID0OAEARmgGZIBOaAOhCTBAMZxhIT4DOAjjAIaUAUEAJT5gNfPkpwY5NmwBU+CAG4aAXxo0AbnyX4AvKLWqIEAHRtDXXgICMABiHKQAGhAB3CgGtk6LCDpGZlZ8OHIeCHYycgBbfhIwABs0AElaJBd8HigwTKQoYMiRMTZ8BlZ2OHwAEgMsnLMAcyRm8vRxMoqq9iQZBjQ6hOS0sjMevupSvHxACnVATfjAGcTAFfjAPbVAA3lAfFdABCNAELdAY7lAQA8OqRk2av5x8n6hMwSIFH4Acms+NEebqFeIOH4byihEjx+k8II9Mo8IDAYsRyO8zOQkEgfjdGmgIGhwnA0L91DRXOBoPAADIRRr+OAATygaHYDHIYAK+IAFjx2AAFKTMDFYMIwNBucoxT6UADy8FgcB55D5aiAA

[snowman]

非常感谢！

[zhangdaren]

再套一层就打回原形了：

https://play.gogocode.io/#code/N4IglgdgDgrgLgYQPYBMCmIBcID0OAEARmgGZIBOaAOhCTBAMZxhIT4DOAjjAIaUAUEAJT5gNfBPwA3PvjpsAvHPpMWEQULFtJOhq3ZIANmgB0hpAHMN4yQF8blODHJs2AKnwQA3DXsQaMuSe+ErAtj4QECaKHNx8aPwAjAAMQl4gADQgAO4UANbI6Fgg8qqs+HDkPBDsZOQAtvwkYMYAkrRIGfg8UGBdSFDM+iJaEno1cPgAJCHdvSYWlkh66Dbj7JMGzgxos81tHSZb5Ds2ePiAFOqAm-GAM4mAK-GAe2qABvKA+K6ACEaAIW6Ax3KAgB4OaE4XNN+McdkITM0ICh+AByLi8Sgw8FQeIQOD8cGUKCGHg7WEQGFdGEQGD1YjkJEmchIJDo8EWNAQNBVOAJIS+GiZcDQeAAGWqFmKcAAnlA0OwGOQwIMuQALHjsAAKjmYzKwlRgaCyenqKMoAHl4LA4OryJrbEA