Function addScript

src/js/WinJS/Fragments.js:36–86

(scriptTag, fragmentHref, position, lastNonInlineScriptPromise)

    var uniqueId = 1;

    function addScript(scriptTag, fragmentHref, position, lastNonInlineScriptPromise) {
        // We synthesize a name for inline scripts because today we put the
        // inline scripts in the same processing pipeline as src scripts. If
        // we seperated inline scripts into their own logic, we could simplify
        // this somewhat.
        //
        var src = scriptTag.src;
        var inline = !src;
        if (inline) {
            src = fragmentHref + "script[" + position + "]";
        }
        src = src.toLowerCase();

        if (!(src in scripts)) {
            var promise = null;

            scripts[src] = true;
            var n = _Global.document.createElement("script");
            if (scriptTag.language) {
                n.setAttribute("language", "javascript");
            }
            n.setAttribute("type", scriptTag.type);
            n.setAttribute("async", "false");
            if (scriptTag.id) {
                n.setAttribute("id", scriptTag.id);
            }
            if (inline) {
                var text = scriptTag.text;
                promise = lastNonInlineScriptPromise.then(function () {
                    n.text = text;
                }).then(null, function () {
                    // eat error
                });
            } else {
                promise = new Promise(function (c) {
                    n.onload = n.onerror = function () {
                        c();
                    };

                    // Using scriptTag.src to maintain the original casing
                    n.setAttribute("src", scriptTag.src);
                });
            }
            head.appendChild(n);

            return {
                promise: promise,
                inline: inline,
            };
        }
    }

    function addStyle(styleTag, fragmentHref, position) {
        var src = (fragmentHref + "script[" + position + "]").toLowerCase();