在JSP标记中使用JavaScript [英] Using JavaScript within a JSP tag
问题描述
我已经看到这个问题重新导入与之相关的js文件标签内容本身。我有一个类似的问题,这里我有一个生成一些HTML的jsp标签,并有一个通用的js实现来处理这个HTML的行为。此外,我需要编写一些初始化语句,因此我可以通过JavaScript使用它。为了能够在我的JavaScript中使用这个处理程序,它应该以某种方式可访问。
I've seen this question regading the importing of js-files related to the tag content itself. I have a similar problem, here I have a jsp tag that generates some HTML and has a generic js-implementation that handles the behavior of this HTML. Furthermore I need to write some initialization statements, so I can use it afterwards through JavaScript. To be possible to use this "handler" within my JavaScript, it should be somehow accessible.
问题是......编写内联< script>是否可以。标签以及我的HTML用于实例化和初始化目的(我个人认为它不是很优雅)?关于JS世界的可访问性,我是否应该保留一个全局变量引用我的处理程序对象(我认为不是很优雅),有更好的方法吗?
The question is... Is it Ok to write inline <script> tags along with my HTML for instantiation and initialization purposes (personally I don't think its very elegant)? And about being accessible to the JS world, should I leave a global var referencing my handler object (not very elegant aswell I think), are there better ways to do it?
推荐答案
你应该在自己的文件中争取使用javascript。这通常通过渐进增强来完成。但有些时候你没有选择,例如当同一个JSP呈现不同语言的页面时。这是一个真实的例子:
You should strive for javascript in its own files. This is usually done with Progressive Enhancement. But some times you don't have a choice, for instance when the same JSP renders pages in different languages. Here's a real-life example:
JSP:
<script src="/javascript/article_admin.js"></script>
<script type="text/javascript">
NP_ArticleAdmin.initialize({
text: {
please_confirm_deletion_of: '<i18n:output text="please.confirm.deletion.of"/>',
this_cannot_be_undone: '<i18n:output text="this.cannot.be.undone"/>'
}
});
</script>
javascript(article_admin.js):
The javascript (article_admin.js):
/*global NP_ArticleAdmin, jQuery, confirm */
NP_ArticleAdmin = function ($) {
var text;
function delete_article(event) {
var article = $(this).parents("li.article"),
id = article.attr("id"),
name = article.find("h3.name").html();
if (confirm(text.please_confirm_deletion_of + name + text.this_cannot_be_undone)) {
$.post("/admin/delete_article", {id: id});
article.fadeOut();
}
event.preventDefault();
return false;
}
function initialize(data) {
text = data.text;
$("#articles a.delete").click(delete_article);
}
return {initialize: initialize};
}(jQuery);
在这个例子中,JSP文件中唯一的javascript是需要存在的部分。核心功能在其自己的js文件中分开。
In this example, the only javascript in the JSP-file is the part that needs to be there. The core functionality is separated in its own js-file.
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