书签小程序在IE9上不起作用

Question

这段代码可以在火狐和Chrome上运行，但不能在IE9上运行。它甚至可以在IE9中的同一个域上工作，但在其他域上失败。控制台显示了一个SCRIPT1002 :语法错误。我将此代码放在jsp中，并使用{domain}/path从我的控制器将其加载到脚本标记中。

   (
        function(){
           var v = "1.9.1";
           if (window.jQuery === undefined || window.jQuery.fn.jquery < v ) {
           var done = false;
         var script = document.createElement("script");
         script.src = "http://ajax.googleapis.com/ajax/libs/jquery/" + v + "/jquery.min.js";
         script.onload = script.onreadystatechange = function(){
        if (!done && (!this.readyState || this.readyState == "loaded" || this.readyState == "complete")) {
         done = true;
            initBookmarklet();
        }
        };      
        document.getElementsByTagName("head")[0].appendChild(script);   
            } else {
                initBookmarklet();
            } 


            function initBookmarklet(){
                //do stuff here
            }
        }());

Answer 1

试着这样写吧

var v = "1.9.1";
if (window.jQuery === undefined || window.jQuery.fn.jquery < v) {
    var done = false;
    var script = document.createElement("script");
    script.src = "http://ajax.googleapis.com/ajax/libs/jquery/" + v + "/jquery.min.js";
    script.onload = script.onreadystatechange = function () {
        if (!done && (!this.readyState || this.readyState == "loaded" || this.readyState == "complete")) {
            done = true;
            initBookmarklet();
        }
    };
    document.getElementsByTagName("head")[0].appendChild(script);
} else {
    initBookmarklet();
}


function initBookmarklet() {
    //do stuff here
}