jQuery.inArray(), how to use it right?

by

inArray returns the index of the element in the array, not a boolean indicating if the item exists in the array. If the element was not found, -1 will be returned.

So, to check if an item is in the array, use:

if(jQuery.inArray("test", myarray) !== -1)

More Related Contents:

  1. ReferenceError: event is not defined
  2. Which is the fastest way to loop? [for curiosity]
  3. Jquery replace only specific characters [closed]
  4. SecurityError: Blocked a frame with origin from accessing a cross-origin frame
  5. window.onload vs $(document).ready()
  6. How to resize images proportionally / keeping the aspect ratio?
  7. Is there a null-coalescing (Elvis) operator or safe navigation operator in javascript?
  8. Remove ALL white spaces from text
  9. Method overloading in Javascript
  10. Select all contents of textbox when it receives focus (Vanilla JS or jQuery)
  11. In jQuery, how do I select an element by its name attribute?
  12. Equivalent of jQuery .hide() to set visibility: hidden
  13. JQuery .on() method with multiple event handlers to one selector
  14. How can I update window.location.hash without jumping the document?
  15. Prevent contenteditable adding on ENTER – Chrome
  16. jQuery.parseJSON vs JSON.parse
  17. Multi-line string insert using jQuery
  18. Why is ‘event’ available globally in Chrome but not Firefox?
  19. Possible to associate label with checkbox without using “for=id”?
  20. Waiting on multiple asynchronous calls to complete before continuing
  21. Moving a focus when the input text field reaches a max length
  22. How to scroll to an element in jQuery?
  23. Web browser: Hide mouse cursor [duplicate]
  24. Changing the page title with Jquery
  25. How to create a new img tag with JQuery, with the src and id from a JavaScript object?
  26. How to iterate a table rows with JQuery and access some cell values?
  27. DOM Element Width before Appended to DOM
  28. How to stop user from printing webpages? using javascript or jquery
  29. How can I compare two color values in jQuery/JavaScript?
  30. How to avoid conflict between JQuery and Prototype

Leave a Comment