尝试在Google跟踪代码管理器中发布对讲机代码的更改时，为什么会出现JavaScript编译器错误？

Question

This is my tag:

<script>
    window.intercomSettings = {
        app_id: "fanwstw2"
    };
</script>
<script>
    (function() {
        var w = window;
        var ic = w.Intercom;
        if (typeof ic === "function") {
            ic('reattach_activator');
            ic('update', intercomSettings);
        } else {
            var d = document;
            var i = function() {
                i.c(arguments)
            };
            i.q = [];
            i.c = function(args) {
                i.q.push(args)
            };
            w.Intercom = i;

            function l() {
                var s = d.createElement('script');
                s.type = 'text/javascript';
                s.async = true;
                s.src = 'https://widget.intercom.io/widget/fanwstw2';
                var x = d.getElementsByTagName('script')[0];
                x.parentNode.insertBefore(s, x);
            }
            if (w.attachEvent) {
                w.attachEvent('onload', l);
            } else {
                w.addEventListener('load', l, false);
            }
        }
    })()
</script>

This is the error message

Answer 1

I can't see any issue with your code, maybe it's the parser being overly awkward. It could also be caused by you wrapping within an IIFE.

How about changing this line below (just to rule it out being weird)..

ic('update', intercomSettings);

To this...

ic('update', w.intercomSettings);

Answer 2

I had this issue as well, and I believe it's because GTM, which is based on the ES5 engine, is seeing ES6 code and trying to parse it as ES5. It is likely coming from your l() function declaration within the if block. Try to move that out of the if block, like just before it and compile the tag again, like this:

(function() {
    var w = window;
    var ic = w.Intercom;

    // moved this out of if block
    function l() {
        var s = d.createElement('script');
        s.type = 'text/javascript';
        s.async = true;
        s.src = 'https://widget.intercom.io/widget/fanwstw2';
        var x = d.getElementsByTagName('script')[0];
        x.parentNode.insertBefore(s, x);
    }

    if (typeof ic === "function") {
        ic('reattach_activator');
        ic('update', intercomSettings);
    } else {
        var d = document;
        var i = function() {
            i.c(arguments)
        };
        i.q = [];
        i.c = function(args) {
            i.q.push(args)
        };
        w.Intercom = i;

        if (w.attachEvent) {
            w.attachEvent('onload', l);
        } else {
            w.addEventListener('load', l, false);
        }
    }
})()