我开始学习JavaScript,这个问题阻止了我.请看这个：

<script>
    $(function () {
        // Start the connection.
        $.connection.hub.start().done(function () {
            // How to define some functions here to call from below script?
        });
    });
</script>

<script type="text/javascript" gwd-events="handlers">
    window.gwd = window.gwd || {};
    gwd.boardSelectionChanged = function(event) {
        var carousel = document.getElementById("mediaCarousel");
        var index = carousel.currentIndex;
        // how to pass this index to a function above?
};
</script>

在第一个脚本中,我尝试连接到服务器.在第二个脚本中,用户可以选择图像.

我想将索引从第二个脚本传递到第一个脚本中的函数,以将其发送到服务器.

如何在第一个中定义一个函数以及如何调用它？谢谢.

解决方法:

你可以这样做：

<script>
    var newFunction = undefined;

    $(function () {
        // Start the connection.
        $.connection.hub.start().done(function () {
            // How to define some functions here to call from below script?
            newFunction = function(index){
                // Your function processing.
            }
        });
    });
</script>

<script type="text/javascript" gwd-events="handlers">
    window.gwd = window.gwd || {};
    gwd.boardSelectionChanged = function(event) {
        var carousel = document.getElementById("mediaCarousel");
        var index = carousel.currentIndex;
        // how to pass this index to a function above?
        if(newFunction) newFunction(index);
};
</script>