"use strict" in javascript -

"use strict" in javascript -

this question has reply here:

what “use strict” in javascript, , reasoning behind it? 16 answers

i have been reading many javascript codes , wondering of benefits of using "use strict". thought much appreciated.

before go , set "use strict" on scripts, warning:

browsers not back upwards strict mode, run code different behavior browsers do.

now, reply question. benefits of strict mode are:

some errors no longer silent , throw instead. allows interpreter create optmizations. prohibits syntax deprecated in next version of ecmascript.

(source: https://developer.mozilla.org/en-us/docs/javascript/reference/functions_and_function_scope/strict_mode)

javascript use-strict