JSFiddle - React, Tailwind, and code Playground

JavaScript

var ar=[
    2,
    -2,
    3.7,
    -4.88,
    "7.9",
    "3,8",
    "6.6.6.6",
    "-8.95",
   "-8.95dfg",
   "asd345",
   "  -12.34",
    true,
    false,
    null,
    undefined,
    0,
    "f",
    "3f",
    "3awer",
    "0x77",
    0x77,
    [],
    {}    
]
for(var i=0;i<ar.length;i++)
    document.write( ar[i]+"="+parseFloat(ar[i]) +"<br>");