underscore.js拒绝功能不起作用

Question

Any idea why this piece of code is not working? As you see, I am trying to delete the object with id = 1 from an array.

var arr = [{id: 1}, {id: 2}];
    console.log('arr: ', arr);

    _.reject(arr, function(obj) {
       console.log('Deleting obj')
      return obj.id == 1;
    });
console.log('arr now : ', arr); // This displays an unchanged array

Answer 1

You are not assigning back the result of _.reject to arr . This will work:

arr = _.reject(arr, function(obj) {
    console.log('Deleting obj')
    return obj.id == 1;
});