ReferenceError: Require not defined when trying to use jquery in angular2

Question

I am unable to use jQuery with angular2. Where a friend of mine got it working (on mac) it is not on my windows machine.

The errors:

jquery-ui.js:1 Uncaught ReferenceError: require is not defined
angular2.dev.js:23935 EXCEPTION: TypeError: jQuery(...).find(...).sortable is not a function in [null]
angular2.dev.js:23925 EXCEPTION: TypeError: jQuery(...).find(...).sortable is not a function in [null]BrowserDomAdapter.logError @ angular2.dev.js:23925
angular2.dev.js:23925 ORIGINAL EXCEPTION: TypeError: jQuery(...).find(...).sortable is not a functionBrowserDomAdapter.logError @ angular2.dev.js:23925
angular2.dev.js:23925 ORIGINAL STACKTRACE:BrowserDomAdapter.logError @ angular2.dev.js:23925
angular2.dev.js:23925 TypeError: jQuery(...).find(...).sortable is not a function at EditPresentationComponent.ngOnInit

The piece of code where we use jquery.

import { Component, OnInit, ElementRef, Inject } from 'angular2/core';

declare var jQuery: any;

    @Component({
        selector: 'edit-presentation',
        templateUrl: 'app/Edit Presentation/edit_presentation.component.html'
    })

export class EditPresentationComponent implements OnInit {
    elementRef: ElementRef;

    isMyPresentationEmpty = true;

    constructor(@Inject(ElementRef) elementRef: ElementRef) {
        this.elementRef = elementRef;
    }

    ngOnInit() {
        var self = this;

        // Initialize Sortable on lists
        var oldList, newList, item, oldIndex;
        jQuery(this.elementRef.nativeElement).find('.slide-categories .sortable-list').sortable({
            start: function(event, ui) {
                item = ui.item;
                oldIndex = item.index();
                newList = oldList = ui.item.parent().parent();
            },
            change: function(event, ui) {  
                if (ui.sender) newList = ui.placeholder.parent().parent();
                // Check for empty list and hide/show instruction text
                if (jQuery('.my-presentation-column .agile-list').has('li:not(".ui-sortable-helper")').length) {
                    self.isMyPresentationEmpty = false;
                } else {
                    self.isMyPresentationEmpty = true;
                }
            },
            stop: function(event, ui) {
                if (oldList[0] != jQuery(event.toElement).parent().parent().parent().parent()[0]) {
                    if (jQuery(event.target).parent().hasClass('slide-categories')) {
                        if (oldIndex == 0) {
                            jQuery(event.target).prepend(item.clone());
                        } else {
                            jQuery(event.target).find('li:eq(' + (oldIndex - 1) + ')').after(item.clone());
                        }
                    } else {
                        item.remove();
                    }
                }
            },
            connectWith: ".sortable-list"
        }).disableSelection();

Overal when I execute npm install jquery or npm install jquery-ui I get

`[email protected] extraneous

as result, so it is installed.

I hope someone can help me with this.

then it doesn't compile as it can not find any function or the name — Jorrick Sleijster
– Jorrick Sleijster, Commented May 3, 2016 at 11:51
typescript compiler may give an error but the function would run. — eko
– eko, Commented May 3, 2016 at 11:53
[0] app/Edit Presentation/edit_presentation.component.ts(32,21): error TS2304: C annot find name 'jQuery'. — Jorrick Sleijster
– Jorrick Sleijster, Commented May 3, 2016 at 11:54

ArcSine · Accepted Answer · 2016-05-02 10:19:09Z

1

If you are using typescript and angular2, you should just install the typings for jquery and jquery-ui. You could then load jQuery as such:

import "jquery-ui"
import * as $ from "jquery"

The other issue you seem to be having is that jquery-ui is looking for require, which is not present in the browser natively. I would double check how you are loading jquery-ui as it might be introducing bugs as well

answered May 2, 2016 at 10:19

ArcSine

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1 Comment

Jorrick Sleijster Over a year ago

I could not include this without errors. The error is in the jquery-ui file

Thierry Templier · Accepted Answer · 2016-05-02 10:20:47Z

Here is the way I make it work:

Include corresponding JS files in the main HTML file

<script src="https://code.jquery.com/jquery-2.2.3.min.js"></script>
<script src="https://code.jquery.com/ui/1.11.4/jquery-ui.min.js"></script>

Wrap jquery().storable into a custom directive

@Directive({
  selector: '[sortable]'
})
export class SortableDirective {
  constructor(private elementRef:ElementRef) {
  }

  ngOnInit() {
    $(this.elementRef.nativeElement).sortable({
      start: function(event, ui) {
        console.log('start');
      },
      change: function(event, ui) {  
        console.log('change');
      },
      stop: function(event, ui) {
        console.log('stop');
      }
    }).disableSelection();
  }
}

Use it this way

@Component({
  selector: 'app',
  template: `
    <ul sortable>
      <li class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>Item 1</li>
      <li class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>Item 2</li>
    </ul>
`,
  directives: [ SortableDirective ]
})
export class App implements AfterViewInit {
}

See this plunkr: https://plnkr.co/edit/gQnKzqdHCY82LOCFM1ym?p=preview.

Regarding the require problem, you could load jquery-ui from SystemJS since it understand the require function. Here is a sample:

<script>
  System.config({
    map: {
      'jquery-ui': 'nodes_module/.../jquery-ui.js'
    }
  });
</script>

Then you can import it this way:

import jqueryui from 'jquery-ui';

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