how to pass a variable to a regex

Question

I have a find statement like this

collSession.find({\"Venue.type\": /.*MT.*/}).toArray(function (err, _clsSession)
        {
            console.log(_clsSess         


        

Answer 1

Finally i got from here

it is "Venue.type": new RegExp(queryParams.et)

Answer 2

Instead of using the inline syntax to create a regular expression, you can also use the RegExp object to create one based on a string

var searchPhrase = "MT";
var regularExpression = new RegExp(".*" + searchPhrase + ".*");
collSession.find({"Venue.type": regularExpression}) [...]

Answer 3

Replace /.*MT.*/ with new RegExp( ".*" + variable + ".*" )

Answer 4

Try this:

  var pattern = 'concatenate string' + here,
        regexp = new Regexp(pattern);

Answer 5

Take a look at this code: (I'm using mongoose)

exports.getSearchPosts = (req, res, next) => {
const keyword = req.body.keyword;
Post.find({ postTitle: new RegExp( ".*" + keyword + ".*" ) }).then(posts => {
    res.render('post/search', {
        pageTitle: 'Search result for: ' + keyword,
        posts: posts,
        category: postCategory,
        posts: catPost,
    });
 }).catch(err => console.log(err));
}

I think you will find it helpful