JavaScript number-to-string conversion

a = a+''     // This converts a to string
b += ''      // This converts b to string

5.41 + ''    // Result: the string '5.41'
Math.PI + '' // Result: the string '3.141592653589793'

a = a.toString()     // This converts a to string
b = b.toString()     // This converts b to string

(5.41).toString()    // Result: the string '5.41'
(Math.PI).toString() // Result: the string '3.141592653589793'