{"id":52302,"date":"2023-04-24T06:45:33","date_gmt":"2023-04-24T06:45:33","guid":{"rendered":"https:\/\/kinsta.com\/se\/?p=52302&post_type=knowledgebase&preview_id=52302"},"modified":"2025-10-01T20:00:49","modified_gmt":"2025-10-01T20:00:49","slug":"uncaught-typeerror-is-not-a-function","status":"publish","type":"post","link":"https:\/\/kinsta.com\/se\/blog\/uncaught-typeerror-is-not-a-function\/","title":{"rendered":"S\u00e5 h\u00e4r \u00e5tg\u00e4rdar du felet ”Uncaught TypeError: $ Is Not a Function”"},"content":{"rendered":"

WordPress har fullt st\u00f6d f\u00f6r JavaScript<\/a> och jQuery-biblioteket<\/a>. WordPress s\u00e4tt att implementera jQuery kan dock leda till fel n\u00e4r du f\u00f6rs\u00f6ker utf\u00f6ra funktioner. Ett av de vanligaste problemen \u00e4r exempelvis felet ”Uncaught TypeError: $ is not a function”.<\/p>\n

Att fels\u00f6ka detta fel \u00e4r relativt enkelt om du f\u00f6rst\u00e5r vad som orsakar det. Aliaset ”$” \u00e4r k\u00e4rnan i problemet. jQuery och WordPress erbjuder dessutom flera s\u00e4tt att kringg\u00e5 det s\u00e5 att du kan k\u00f6ra de funktioner som du beh\u00f6ver.<\/p>\n

I den h\u00e4r artikeln s\u00e5 f\u00f6rklarar vi vad felet ”Uncaught TypeError: $ is not a function” \u00e4r och vad som orsakar det. Vi visar dig dessutom hur du kan fels\u00f6ka det. Nu s\u00e4tter vi ig\u00e5ng!
\n

<\/div><\/kinsta-auto-toc><\/p>\n

Vad \u00e4r felet ”Uncaught TypeError: $ Is Not a Function” i WordPress?<\/h2>\n

Felet ”Uncaught TypeError: $ is not a function” \u00e4r ett vanligt JavaScript-fel<\/a>. Det uppst\u00e5r n\u00e4r jQuery-biblioteket inte laddas korrekt eller n\u00e4r det finns en konflikt med andra skript som anv\u00e4nder symbolen ”$”.<\/p>\n

I WordPress s\u00e5 har det h\u00e4r felet mer att g\u00f6ra med hur Content Management System (CMS)<\/a> implementerar jQuery och mindre med laddningsproblem<\/a>.<\/p>\n

jQuery \u00e4r ett popul\u00e4rt JavaScript-bibliotek<\/a>. Det anv\u00e4nds exempelvis ofta i WordPress-teman och plugins f\u00f6r att hantera olika dynamiska element, animationer och AJAX-operationer:<\/p>\n

\"jQuery-bibliotek\"
jQuery-bibliotek<\/figcaption><\/figure>\n

I jQuery s\u00e5 \u00e4r symbolen ”$” ett alias f\u00f6r jQuery-objektet. Det \u00e4r det prim\u00e4ra objektet som du interagerar med n\u00e4r du arbetar med biblioteket. Det g\u00f6r koden kortare, mer l\u00e4ttl\u00e4st och enklare att skriva.<\/p>\n\n

”Uncaught TypeError: $ is not a function” \u00e4r lite sv\u00e5rt att fels\u00f6ka eftersom du inte f\u00e5r se ett tydligt felmeddelande. Till skillnad fr\u00e5n andra WordPress-fel s\u00e5 kan det h\u00e4r problemet utl\u00f6sas av felkonfigurerade element p\u00e5 din webbplats eller till och med en 404-felsida<\/a>:<\/p>\n

\"404-felet
404-felet ”Sidan har inte hittats”<\/figcaption><\/figure>\n

Det mest effektiva s\u00e4ttet att diagnostisera problemet p\u00e5 \u00e4r att ta en titt i utvecklarkonsolen eller anv\u00e4nda WordPress fels\u00f6kningsloggar<\/a>.<\/p>\n

Vilka \u00e4r de viktigaste orsakerna till felet ”Uncaught TypeError: $ Is Not a Function”?<\/h2>\n

Felet ”Uncaught TypeError: $ is not a function” har allt att g\u00f6ra med jQuery. Du st\u00f6ter p\u00e5 det h\u00e4r problemet n\u00e4r en funktion som inneh\u00e5ller symbolen ”$” k\u00f6rs medan webbplatsen laddas.<\/p>\n

H\u00e4r \u00e4r n\u00e5gra m\u00f6jliga orsaker bakom felet:<\/p>\n

    \n
  1. JQuery-biblioteket har inte laddats korrekt<\/strong>. Om jQuery-biblioteket inte \u00e4r korrekt laddat eller inkopplat s\u00e5 kommer ”$”-symbolen inte att k\u00e4nnas igen som en giltig funktion. Som ett resultat s\u00e5 kommer det att uppst\u00e5 ett fel. Detta \u00e4r vanligtvis inget problem i WordPress eftersom Content Management System (CMS) laddar biblioteket automatiskt.<\/li>\n
  2. Du anv\u00e4nder jQuery i noConflict-l\u00e4get. <\/strong>Som standard s\u00e5 k\u00f6r WordPress jQuery i noConflict-l\u00e4ge<\/a>. Den k\u00e4nner d\u00e4rf\u00f6r inte igen symbolen ”$” som ett funktionsnamn. F\u00f6r att kunna anv\u00e4nda den s\u00e5 m\u00e5ste du s\u00e4tta in en l\u00f6sning f\u00f6r att komma till r\u00e4tta med problemet.<\/li>\n
  3. Plugin- eller temakonflikter.<\/strong> Vissa plugins eller teman kan ha felaktigt kodad JavaScript som st\u00f6r jQuerys korrekta funktion eller anv\u00e4nder symbolen ”$”. Det kan ske p\u00e5 ett s\u00e4tt som orsakar problem med andra skript<\/a>.<\/li>\n<\/ol>\n

    Sammanfattningsvis s\u00e5 \u00e4r WordPress inte konfigurerat f\u00f6r att k\u00e4nna igen symbolen ”$”. Det betyder dock inte att du inte kan k\u00f6ra jQuery-kod inom CMS: et. Biblioteket \u00e4r trots allt en del av WordPress. Vad du m\u00e5ste g\u00f6ra \u00e4r att anv\u00e4nda en l\u00f6sning f\u00f6r att undvika problem med ”$”-symbolen.<\/p>\n

    S\u00e5 h\u00e4r \u00e5tg\u00e4rdar du felet ”Uncaught TypeError: $ Is Not a Function” (2 s\u00e4tt)<\/h2>\n

    Innan vi b\u00f6rjar arbeta s\u00e5 \u00e4r det viktigt att notera att jQuery redan \u00e4r en del av WordPress. Vissa handledningar kommer att instruera dig att st\u00e4lla jQuery i k\u00f6<\/a>. Biblioteket har dock varit en del av Content Management System (CMS) ett tag.<\/p>\n

    WordPress k\u00f6r dessuom jQuery i ”noConflict”-l\u00e4ge fr\u00e5n b\u00f6rjan. Som ett resultat s\u00e5 sl\u00e4pper den ”$”-symbolen s\u00e5 att andra bibliotek kan anv\u00e4nda den. Ist\u00e4llet f\u00f6r att inaktivera ”noConflict”-l\u00e4get s\u00e5 kan du ta dig an problemet p\u00e5 f\u00f6ljande s\u00e4tt.<\/p>\n

    1. Anv\u00e4nd ”jQuery” i st\u00e4llet f\u00f6r ”$”<\/h3>\n

    Om du st\u00f6ter p\u00e5 problem n\u00e4r du anv\u00e4nder symbolen ”$” i funktioner s\u00e5 kan du exempelvis anv\u00e4nda ”jQuery” ist\u00e4llet. F\u00f6r att ge dig ett exempel s\u00e5 kan en grundl\u00e4ggande jQuery-funktion som anv\u00e4nder ”$” se ut s\u00e5 h\u00e4r:<\/p>\n

    $(function() {\n  \/\/ Your code here will run once the DOM is ready\n});<\/code><\/pre>\n
    I det h\u00e4r fallet s\u00e5 kan du snabbt \u00e5tg\u00e4rda problemet genom att ers\u00e4tta ”$”-symbolen med jQuery. Koden skulle d\u00e5 se ut s\u00e5 h\u00e4r:<\/p>\n
    jQuery(function() {\n  \/\/ This code will not trigger the error\n});<\/code><\/pre>\n
    Alternativt s\u00e5 kan du ist\u00e4llet ”svepa in” koden i ett omedelbart anropat funktionsuttryck som inneh\u00e5ller jQuery-symbolen. F\u00f6ljande exempel skulle\u00a0inte <\/em>utl\u00f6sa felet ”Uncaught TypeError: $ is not a function” eftersom det anv\u00e4nder jQuery-symbolen som omslag:<\/p>\n
    jQuery(function ($) {\n    \/\/ You can use $ inside the wrapper\n    console.log($('.primary-menu'));\n});<\/code><\/pre>\n
    N\u00e4r du har gjort dessa \u00e4ndringar i koden s\u00e5 kan du anv\u00e4nda webbl\u00e4sarens utvecklarkonsol eller WordPress fels\u00f6kningslogg f\u00f6r att se om felet kvarst\u00e5r. Om det g\u00f6r det s\u00e5 kan du beh\u00f6va mappa ”jQuery” till en annan symbol f\u00f6r att undvika fler fel.<\/p>\n
    2. Anv\u00e4nd ett anpassat alias i jQuery<\/h3>\n
    ”$” \u00e4r standard-aliaset f\u00f6r jQuery-objektet. Men eftersom WordPress k\u00f6r jQuery i noConflict-l\u00e4get s\u00e5 kan du beh\u00f6va mappa ett alternativt alias. Allt f\u00f6r att undvika konflikter med andra bibliotek.<\/p>\n
    Den h\u00e4r processen \u00e4r relativt enkel, eftersom du kan mappa aliaset till en ny symbol med en enda kodrad:<\/p>\n
    vvar $j = jQuery;<\/code><\/pre>\n
    Den koden ers\u00e4tter standard-aliaset med ”$j”, men det kan vara exakt vad du vill. Vissa utvecklare f\u00f6redrar detta tillv\u00e4gag\u00e5ngss\u00e4tt framf\u00f6r att beh\u00f6va skriva in hela ”jQuery”-objektet, vilket vi visade i den f\u00f6reg\u00e5ende metoden.<\/p>\n
    Om du inte \u00e4r s\u00e4ker p\u00e5 var du ska l\u00e4gga till den h\u00e4r koden s\u00e5 kan du l\u00e4sa v\u00e5r handledning om hur du l\u00e4gger till kod i sidhuvudet och sidfoten i WordPress<\/a>. T\u00e4nk p\u00e5 att \u00e4ven om du registrerar ett nytt alias s\u00e5 kan du fortfarande anv\u00e4nda ”jQuery” i st\u00e4llet f\u00f6r den symbolen.<\/p>\n\n
    Sammanfattning<\/h2>\n
    WordPress g\u00f6r det m\u00f6jligt f\u00f6r dig att anv\u00e4nda jQuery p\u00e5 din webbplats. Men om du vill undvika fel som ”Uncaught TypeError: $ is not a function” s\u00e5 m\u00e5ste du f\u00f6rst\u00e5 hur CMS: et implementerar biblioteket. WordPress anv\u00e4nder exempelvis jQuerys ”noConflict”-l\u00e4ge, vilket inneb\u00e4r att det inte k\u00e4nner igen symbolen ”$”.<\/p>\n
    Felet ”Uncaught TypeError: $ is not a function” visas n\u00e4r du f\u00f6rs\u00f6ker anv\u00e4nda en funktion som anropar jQuery med hj\u00e4lp av ”$”. F\u00f6r att kringg\u00e5 det h\u00e4r problemet s\u00e5 kan du skriva in hela jQuery-objektet i st\u00e4llet eller mappa aliaset till en annan symbol f\u00f6r att undvika konflikter.<\/p>\n
    Om du anv\u00e4nder Kinsta s\u00e5 kan du aktivera WordPress fels\u00f6kningsl\u00e4ge i instrumentpanelen MyKinsta<\/a> f\u00f6r att diagnostisera problem. Dessutom s\u00e5 erbjuder alla v\u00e5ra planer support av h\u00f6gsta kvalitet f\u00f6r att hj\u00e4lpa dig att fels\u00f6ka eventuella problem som du kan st\u00f6ta p\u00e5. Kolla in v\u00e5ra planer<\/a>!<\/p>\n","protected":false},"excerpt":{"rendered":"
    WordPress har fullt st\u00f6d f\u00f6r JavaScript och jQuery-biblioteket. WordPress s\u00e4tt att implementera jQuery kan dock leda till fel n\u00e4r du f\u00f6rs\u00f6ker utf\u00f6ra funktioner. Ett av de …<\/p>\n","protected":false},"author":199,"featured_media":52303,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kinsta_gated_content":false,"_kinsta_gated_content_redirect":"","footnotes":""},"tags":[],"topic":[782],"class_list":["post-52302","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","topic-javascript-fel"],"yoast_head":"\nHur man fixar \u201cUncaught TypeError: $ Is Not a Function\u2014felet - Kinsta\u00ae<\/title>\n<meta name=\"description\" content=\"\u201cUncaught TypeError: $ Is Not a Function\u201d-felet \u00e4r ett vanligt JavaScript-fel. 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