如何在Javascript Laravel Blade中编写路由URL？

您可以将字符串占位符用于javascript。

<input type="hidden" id="_room_id" value="{{ $room->id }}">
<input type="hidden" id="_room_project_id" value="{{ $room->id_project }}">

let project_id = $('#_room_project_id').val(); // or document.getElementById('_room_project_id').value if you're not using JQuery
let id = $('#_room_id').val();                 // or document.getElementById('_room_id').value if you're not using JQuery
let url = "{{ route('datatable.getaccess', [':project_id', ':id']) }}".replace(':project_id', project_id).replace(':id', id);

这看起来是错误的，但是它有效，因为我们将字符串传递给了路由助手（后者又产生了一个字符串）

route('datatable.getaccess', [':project_id', ':id'])
// 'viewroom/:project_id/:id'

所以

let url = "{{ route('datatable.getaccess', [':project_id', ':id']) }}".replace(':project_id', project_id).replace(':id', id);

相当于

let url = "viewroom/:project_id/:id".replace(':project_id', project_id).replace(':id', id);