javascript - I can't do a regular expression -

i have variable: física in mongodb , have model attribute name educación física.

i make regular expression passing variable física not return me educación física if database had model name fisica or fisica or something, give yes.

i using nodejs, mongodb, javascript...

sorry english , thank much.

the things need are:

1. anchors: ^ means "beginning of input" , $ means "end of input"

2. case insensitivity: i flag means "ignore whether things capitalized or not"

so:

var rex = /^fisica$/i; //         ^      ^ ^ //         |      | +------ flag (ignore case) //         +------+-------- anchors 

example:

if (rex.test(somestring)) {     // matches... } 

re comment below:

how can put fisica variable? because fisica example, variable sends frontend backend

for that, you'd need regular expression constructor, regexp:

var rex = new regexp("^" + yourvariable + "$", "i"); 

if there characters in value in yourvariable special in regular expressions, need escaped backslash. this question , answers cover escaping regular expression. in case:

var rex = new regexp("^" + somequotingfunction(yourvariable) + "$", "i");