javascript - Lodash filter ignore case -

is there way of case-insensitive filter lodash? tried (see below), works partly (when user input lowercase). problem here after 1 search characters in lower case.

i want filter regardless of how (lower case or upper).

 filter(q: string) {     let query = q.trim();     let searchdata = [];     searchdata = clone(this.data);      searchdata = searchdata.map((entity) => {         entity.email = entity.email.tolowercase();         return entity;     });      if (query) {         this.approverentities = filter(searchdata, (a) => a.email.indexof(query) >= 0);     } else {         this.approverentities = this.data;     } } 

thanks in advance!

you can use filter(), method(), , case-insensitive regular expression:

_.filter(searchdata, _.method('email.match', /foo/i)); 

or, if search term dynamic:

const filtercaseinsensitive = (search, searchdata) =>   _.filter(searchdata, _.method('email.match', new regexp(search, 'i'));