CODEWITHSUNDEEP
javascript
Steven
Steven

Reputation: 13995

missing ) in parenthetical

I keep getting that my javascript is missing ) in parenthetical [Break On This Error] if ( (this.scrollTop < this.scrollH...uches[0].pageY > scrollStartPosY+5) )

function touchScroll(id){
    if(isTouchDevice()){ //if touch events exist...
        var el=document.getElementById(id);
        var scrollStartPosY=0;
        var scrollStartPosX=0;

        document.getElementById(id).addEventListener("touchstart", function(event) {
            scrollStartPosY=this.scrollTop+event.touches[0].pageY;
            scrollStartPosX=this.scrollLeft+event.touches[0].pageX;
            //event.preventDefault(); // Keep this remarked so you can click on buttons and links in the div
        },false);

        document.getElementById(id).addEventListener("touchmove", function(event) {
            // These if statements allow the full page to scroll (not just the div) if they are
            // at the top of the div scroll or the bottom of the div scroll
            // The -5 and +5 below are in case they are trying to scroll the page sideways
            // but their finger moves a few pixels down or up.  The event.preventDefault() function
            // will not be called in that case so that the whole page can scroll.
            if ( (this.scrollTop < this.scrollHeight-this.offsetHeight) && (this.scrollTop+event.touches[0].pageY < scrollStartPosY-5) || (this.scrollTop != 0 && this.scrollTop+event.touches[0].pageY > scrollStartPosY+5) )
                    event.preventDefault(); 
            if ((this.scrollLeft < this.scrollWidth-this.offsetWidth && this.scrollLeft+event.touches[0].pageX < scrollStartPosX-5) || (this.scrollLeft != 0 && this.scrollLeft+event.touches[0].pageX > scrollStartPosX+5))
                    event.preventDefault(); 
            this.scrollTop=scrollStartPosY-event.touches[0].pageY;
            this.scrollLeft=scrollStartPosX-event.touches[0].pageX;
        },false);
    }
}

And I cannot for the life of me figure out why.

Upvotes: 10

Views: 31412

Answers (7)

A-S
A-S

Reputation: 3153

In my case: using typescript inside a function that was written as a string value, in the new $accumulator operator in MongoDB (see the parameter of 'accumulate' below):

const aggregationPipeline: object[] = [
  {
    $group: {
      _id: 1,
      Data: {
        $accumulator: {

          init: `function() {        // Set the initial state
              return {};
            }`,

          initArgs: [],        // Argument to pass to the init function

          accumulate: `function(state: any) {  // Define how to update the state
              return state;
            }`,

          accumulateArgs: [],                     // Argument required by the accumulate function

          merge: `function(state1, state2) {
              return state2;
            }`,

          finalize: `function(state) {                   // Adjust the state to only return field we need
              return state;
            }`,

          lang: "js"
        }
      },
    }
  },
];

Upvotes: 0

gorodezkiy
gorodezkiy

Reputation: 3449

In my case I solved the issue by rebuilding modules cache (I used https://github.com/mzgoddard/hard-source-webpack-plugin )

Upvotes: 0

jmunsch
jmunsch

Reputation: 24149

In my case, I wasn't thinking, and I was:

  • pasting typescript into the browser console

Upvotes: 2

przemo_li
przemo_li

Reputation: 4053

For me it was + missing in some string concatenation that happened inside ().

Upvotes: 3

zatatatata
zatatatata

Reputation: 4821

It seems according to JSLint that this script is fine, except for some type conversions, that aren't mandatory to follow. It must be something before this that leaves an open parenthesis.

Upvotes: 1

Mike C
Mike C

Reputation: 3117

Do you have code before what you are showing above? You may have an unclosed paren before this function that javascript is only realizing is unclosed when it gets to this.

Upvotes: 0

Diodeus - James MacFarlane
Diodeus - James MacFarlane

Reputation: 114447

Try JS Lint. It's great for finding non-obvious syntax errors on scripts.

Upvotes: 6

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