如何解决在加载 <script> 标签之前等待 turbolinks 加载
我遇到了在 another post 中无法解决的问题
简而言之,它的问题是 DataTables 在我刷新页面之前不会加载。
所以我想通过在 turbolinks:load
标签中添加一个 <script>
事件侦听器来解决它,以便在 turbolinks 加载后加载 CDN。可能吗?
这是我在 genes.html.erb
末尾的代码
<script type="text/javascript" charset="utf8" src="https://cdn.datatables.net/1.10.24/js/jquery.dataTables.js"></script>
<script type="text/javascript">
document.addEventListener("turbolinks:load",function () {
$('#myTable').DataTable();
});
</script>
我在想类似的事情:
<script>
document.addEventListener("turbolinks:load",function () {
<script type="text/javascript" charset="utf8" src="https://cdn.datatables.net/1.10.24/js/jquery.dataTables.js"></script>
})
</script>
<script type="text/javascript">
document.addEventListener("turbolinks:load",function () {
$('#myTable').DataTable();
});
</script>
但显然,这是一个有效的。
我尝试的控制台日志:
Uncaught SyntaxError: Unexpected token '<'
genes:162 Uncaught TypeError: $(...).DataTable is not a function
at HTMLDocument.<anonymous> (genes:162)
at Object../node_modules/turbolinks/dist/turbolinks.js.e.dispatch (turbolinks.js:75)
at r.notifyApplicationAfterPageLoad (turbolinks.js:994)
at r.pageLoaded (turbolinks.js:948)
at turbolinks.js:872
(anonymous) @ genes:162
./node_modules/turbolinks/dist/turbolinks.js.e.dispatch @ turbolinks.js:75
r.notifyApplicationAfterPageLoad @ turbolinks.js:994
r.pageLoaded @ turbolinks.js:948
(anonymous) @ turbolinks.js:872
尝试了Pointy的回复
将此代码添加到我的 gene.html.erb
:
<script>
document.addEventListener("turbolinks:load",function () {
var script = document.createElement('script');
script.onload = function() {
alert("Script loaded and ready");
};
script.src = "https://cdn.datatables.net/1.10.24/js/jquery.dataTables.js";
document.getElementsByTagName('head')[0].appendChild(script);
});
</script>
<script type="text/javascript">
document.addEventListener("turbolinks:load",function () {
$('#myTable').DataTable();
});
</script>
但它不起作用。尽管收到来自 localhost:3000
说 Script loaded and ready
的警报,但 DataTables 没有显示 - 控制台日志:
Uncaught TypeError: $(...).DataTable is not a function
at HTMLDocument.<anonymous> (genes:168)
at Object../node_modules/turbolinks/dist/turbolinks.js.e.dispatch (turbolinks.js:75)
at r.notifyApplicationAfterPageLoad (turbolinks.js:994)
at r.pageLoaded (turbolinks.js:948)
at turbolinks.js:872
我也尝试将脚本添加到 application.js
webpacker(同样的错误)
编辑 4?:
<script type="text/javascript" charset="utf8">
var script = document.createElement('script');
script.onload = function() {
alert("Script loaded and ready");
};
script.async = true;
script.src = "https://cdn.datatables.net/1.10.24/js/jquery.dataTables.js";
// MODIFIED THE SCRIPT TO ADD IT TO "BODY" INSTEAD,as in the console,the "working" version has it in the body tag
document.getElementsByTagName('body')[0].appendChild(script);
</script>
<script type="text/javascript">
document.addEventListener("turbolinks:load",function () {
$('#myTable').DataTable();
});
</script>
工作并将脚本附加到 <head>
但不会加载数据表(不是函数)。我不知道像这样加载它,它不起作用,而这个加载它(刷新后)有什么区别:
<script type="text/javascript" charset="utf8" src="https://cdn.datatables.net/1.10.24/js/jquery.dataTables.js"></script>
它们实际上显示在控制台中的同一个位置,在 <body>
标记内
解决方法
你不能这样写:
<script>
document.addEventListener("turbolinks:load",function () {
<script type="text/javascript" charset="utf8" src="https://cdn.datatables.net/1.10.24/js/jquery.dataTables.js"></script>
})
</script>
您必须为脚本标签创建一个元素。看到这个帖子: document.createElement("script") synchronously
只需添加
script.async = true;
用于创建用途
var script = document.createElement('script');
script.onload = function() {
alert("Script loaded and ready");
};
script.async = true;
script.src = "https://cdn.datatables.net/1.10.24/js/jquery.dataTables.js";
document.getElementsByTagName('head')[0].appendChild(script);
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