JavaScript没有startsWith字符串？

Question

Ok, so im trying to do str.startsWith but its saying its undefined.

getFilteredList: function() {
    var users = Meteor.users.find().fetch();
    var filteredList = [];
    for (var i = 0; i < users.length; i++) {
        var username = users[i].username;
        if (username.startsWith(username, Template.instance().filter.get())) {
            filteredList.push(users[i]);
        }
    }
    console.log(filteredList);
    return filteredList;
}

Answer 1

Maybe you want:

username.startsWith(Template.instance().filter.get())

Correct syntax is:

string .startsWith( searchvalue , start )