{"id":289,"date":"2022-06-04T02:37:00","date_gmt":"2022-06-04T02:37:00","guid":{"rendered":"https:\/\/typedarray.org\/?p=289"},"modified":"2022-06-04T11:00:21","modified_gmt":"2022-06-04T11:00:21","slug":"getelementbyid-is-not-a-function-error-javascript","status":"publish","type":"post","link":"https:\/\/typedarray.org\/getelementbyid-is-not-a-function-error-javascript\/","title":{"rendered":"getElementById is not a function Error In JavaScript"},"content":{"rendered":"\n

You can get the ‘getElementById is not a function’ error in JavaScript due to the following reasons –<\/p>\n\n\n\n

  1. You have not spelled ‘getElementById’ correctly.<\/li>
  2. You are calling the getElementById method on a DOM element instead of a document.<\/li><\/ol>\n\n\n\n

    Let’s look at some code examples to see how this can happen. Before that, let’s see what the method does.<\/p>\n\n\n

    \n
    \"getElementById<\/figure><\/div>\n\n\n

    The document.getElementById Method In JavaScript<\/h2>\n\n\n\n

    The document.getElementById <\/a>method is used to return a DOM element based on the id attribute of the element. For example, given the following HTML:<\/p>\n\n\n\n

    <div id="myDiv">This is my DIV<\/div><\/code><\/pre><\/div>\n\n\n\n
    You can use the following JavaScript code to get a reference to the div element:<\/p>\n\n\n\n
    var div = document.getElementById('myDiv');<\/code><\/pre><\/div>\n\n\n\n
    The getElementById method is case sensitive, so make sure you use the correct case. Also, note that the id attribute must be unique within an HTML document.<\/p>\n\n\n\n
    JavaScript getElementById is not a function Error – Causes And Fixes<\/h2>\n\n\n\n
    You Have Not Spelled getElementById Correctly<\/h3>\n\n\n\n
    If you have spelled ‘getElementById’ incorrectly, you will get a ‘getElementById is not a function’ error. For example, the following code will cause an error:<\/p>\n\n\n\n
    document.getelementById('some-element'); \/\/ incorrect spelling<\/code><\/pre><\/div>\n\n\n\n
    To fix this, make sure you spell ‘getElementById’ correctly:<\/p>\n\n\n\n
    document.getElementById('some-element'); \/\/ correct spelling<\/code><\/pre><\/div>\n\n\n\n
    The document.getElementById method is spelled with small g, capital E, capital I and small d. Any of the below variations will not be accepted by JavaScript –<\/p>\n\n\n\n
    • document.getElementByID<\/li>
    • document.getelementById<\/li>
    • document.GetElementById<\/li>
    • document.getElementbyId<\/li><\/ul>\n\n\n\n
      You Are Calling The getElementById Method On A DOM Element Instead Of The Document<\/h3>\n\n\n\n
      Another common cause of the ‘getElementById is not a function’ error is when you try to call the method on a DOM element instead of the document. For example, consider the following code:<\/p>\n\n\n\n
      <div id="some-element">Some element<\/div><\/code><\/pre><\/div>\n\n\n\n
      <script>\n\nvar div = document.getElementById('some-element');\n\nvar elem = div.getElementById('another-element'); \/\/ this will cause an error\n\n<\/script><\/code><\/pre><\/div>\n\n\n\n
      In the above code, we are trying to use the getElemenById method on a div element instead of the document. This will cause an error because the getElementById method is a method of the document object and not a method of DOM elements.<\/p>\n\n\n\n
      To fix this, make sure you call the getElementById method only on the document object and not on any other DOM element.<\/p>\n\n\n\n
      The correct code would be as follows:<\/p>\n\n\n\n
      <div id="some-element">Some element<\/div>\n\n<script>\n\nvar div = document.getElementById('some-element');\n\nvar elem = document.getElementById('another-element'); \/\/ this is the correct way to call the method\n\n<\/script><\/code><\/pre><\/div>\n\n\n\n
      In the code above, we are first getting a reference to the div element and then using the getElementById method on the document object to get a reference to another DOM element.<\/p>\n\n\n\n
      Note that you can also call the getElementById method on the document.body property instead of directly on the document object. For example, the following code will also work fine:<\/p>\n\n\n\n
      <div id="some-element">Some element<\/div><\/code><\/pre><\/div>\n\n\n\n
      <script>\n\nvar div = document.getElementById('some-element');\n\nvar elem = document.body.getElementById('another-element'); \/\/ this is also a valid way to call the method\n\n<\/script><\/code><\/pre><\/div>\n\n\n\n
      The document.body property returns the body element of the current document. Since the body element is a child of the document object, you can call the getElementById method on it.<\/p>\n\n\n\n
      However, it is generally considered better practice to call the getElementById method directly on the document object instead of on the document.body property.<\/p>\n\n\n\n
      Conclusion<\/h2>\n\n\n\n
      In this article, we looked at the various causes of the ‘getElementById is not a function’ error in JavaScript and how to fix it.<\/p>\n\n\n\n
      Make sure you spell the getElementById method correctly and make sure you call it only on the document object or on the document.body property.<\/p>\n\n\n\n
      If you do that, you should be able to get rid of this error for good.<\/p>\n\n\n\n
      I hope this has been helpful.<\/p>\n\n\n\n
      Please let me know if you have any questions or comments.<\/p>\n\n\n\n
      Thank you for reading!<\/p>\n","protected":false},"excerpt":{"rendered":"
      You can get the ‘getElementById is not a function’ error in JavaScript due to the following reasons – You have not spelled ‘getElementById’ correctly. You are calling the getElementById method on a DOM element instead of a document. Let’s look at some code examples to see how this can happen. Before that, let’s see what […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[5],"tags":[10],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/typedarray.org\/wp-json\/wp\/v2\/posts\/289"}],"collection":[{"href":"https:\/\/typedarray.org\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/typedarray.org\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/typedarray.org\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/typedarray.org\/wp-json\/wp\/v2\/comments?post=289"}],"version-history":[{"count":3,"href":"https:\/\/typedarray.org\/wp-json\/wp\/v2\/posts\/289\/revisions"}],"predecessor-version":[{"id":452,"href":"https:\/\/typedarray.org\/wp-json\/wp\/v2\/posts\/289\/revisions\/452"}],"wp:attachment":[{"href":"https:\/\/typedarray.org\/wp-json\/wp\/v2\/media?parent=289"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/typedarray.org\/wp-json\/wp\/v2\/categories?post=289"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/typedarray.org\/wp-json\/wp\/v2\/tags?post=289"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}