javascript 如何在重新加载数据表时传递参数
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how to pass parameters on reload of datatables
提问by BMF
I have a datatable that I initialize like this:
我有一个像这样初始化的数据表：
mytable = DataTable({
ajax:{
url: "/url/getTableData",
dataSrc: ""
},
sortClasses: false,
paging: false,
scrollY: 300,
columns: cols
});
later I'd like to do
以后我想做
mytable.ajax.reload();
It works fine, but now I'd like to send a few parameters in that request. Those parameters I only need on reload, and not in the initialization of the table. How do I do that? thank you!
它工作正常，但现在我想在该请求中发送一些参数。那些参数我只需要在重新加载时，而不是在表的初始化中。我怎么做？谢谢！
回答by ZenCodr
Option 1- Use the preXhr.dt event.
选项 1- 使用 preXhr.dt 事件。
table = $('#example')
.on('preXhr.dt', function ( e, settings, data ) {
data.whateveryouwant = $("#someidhere").val()
data.anotherexample = "kittens"
} )
// then just setup your datatable as normal
.DataTable({
ajax:{
url: "/url/getTableData",
type: "GET" // This is the default value, could also be POST
},
sortClasses: false,
paging: false,
scrollY: 300,
columns: cols
});
see here http://datatables.net/reference/event/
见这里http://datatables.net/reference/event/
Option 2 (preferred)- Use an ajax.data function.
选项 2（首选）- 使用 ajax.data 函数。
table = $('#example').DataTable({
ajax:{
url: "/url/getTableData", // Change this URL to where your json data comes from
type: "GET", // This is the default value, could also be POST, or anything you want.
data: function(d) {
d.whateveryouwant = $("#someidhere").val()
d.anotherexample = "kittens"
}
},
sortClasses: false,
paging: false,
scrollY: 300,
columns: cols
});
Both options produce identical results. Your server will not know the difference. The extra data will be added on every table.ajax.reload(). The extra data will be:
这两个选项产生相同的结果。您的服务器不会知道其中的区别。额外的数据将添加到每个table.ajax.reload(). 额外的数据将是：
whateveryouwantof with value of the #someidhereelement, and
whateveryouwant的#someidhere元素的值，和
anotherexamplewith the value "kittens"
anotherexample与价值 "kittens"
I prefer the Option 2, because it's more obvious that extra data is being added on each request. The first option is a little bit sneaky and not as obvious for someone else reading your code I think.
我更喜欢Option 2，因为更明显的是，每个请求都添加了额外的数据。第一个选项有点偷偷摸摸，我认为对于阅读您的代码的其他人来说并不那么明显。
