javascript equality operation succeeds for both single quote string and number -

• I see the node.

• Comparison in both cases is successful

• Which is correct And should it be used?

• Please argue with my limited understanding.

I have such a code

  if (['code'] == '11000') {console.log ("single quote string") ; } If (['code'] == 11000) {console.log ("with single quote"); }  

Output is:

  Single bid with single quote string  

You should always use 'strict similarity' checks in javascript, which is three equal: === instead of = =

When you use == , for the purpose of operation Javascript will take the liberty to cast for you type strings and corresponding comparison That in this way, fake values, etc. You should never use == for any reason.

More examples:

null == undefined; // true

null === undefined; // false