JavaScript SyntaxError missing after argument list

Question

I am getting the error      SyntaxError  missing   after argument list   With this javascript   var nav   document getElementsByClassName  nav-coll    for  var i   0  i  lt  button length  i          nav i  addEventListener  click  function                console log  haha                     false        What does this error mean

User · Answer

just posting in case anyone else has the same error...

I was using 'await' outside of an 'async' function and for whatever reason that results in a 'missing ) after argument list' error.

The solution was to make the function asynchronous

function functionName(args) {}

becomes

async function functionName(args) {}

User · Answer

You have an extra closing   in your function   var nav   document getElementsByClassName  nav-coll    for  var i   0  i  lt  button length  i          nav i  addEventListener  click  function                console log  haha                         lt    remove this brace        false        You really should be using something like JSHint or JSLint to help find these things  These tools integrate with many editors and IDEs  or you can just paste a code fragment into the above web sites and ask for an analysis

User · Answer

You got an extra   to many as seen below   var nav   document getElementsByClassName  nav-coll    for  var i   0  i  lt  button length  i          nav i  addEventListener  click  function                console log  haha                  lt -- REMOVE THIS           false        A very good tool for those things is jsFiddle  I have created a fiddle with your invalid code and when clicking the TidyUp button it formats your code which makes it clearer if there are any possible mistakes with missing braces     DEMO - Your code in a fiddle  have a play

[javascript] JavaScript: SyntaxError: missing ) after argument list

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