jQuery DataTables-在AJAX调用后强制清空表消息

Question

我设置了一个jquery-datatables ，并使用了充当标准关键字过滤器的自定义搜索过滤器以及使用ajax调用ping后端并返回值（如果有）然后使用该值的自定义项ID搜索。在特定列中搜索表。

$.ajax({
  url: 'the_url_to_lookup_itemID',
  data: {
    'engravingId': search(search is the value from the input field assigned to this variable)
  },
  dataType: 'jsonp',
  success: function(data) {
    console.log(data.assetId);
    var assetId = data.assetId;
    if (assetId != 0) {
      searchResults.columns(2).search(assetId).draw();
    } else {
      searchResults.search(assetId).draw();
    }
  }
});

如果assetId等于"0"则搜索将仅假定其关键字，因为不存在assetId的记录。 但是，除了清除表记录和不显示结果外，没有任何变化。 我假设因为"0"不足以使过滤器运行，那么我该如何强制呢？ 我希望用户看到一些结果， "No matching records found"或类似的结果。

在此自定义搜索未能产生任何结果之后，如何强制我的jquery-datatables显示"No matching records found" ？

我不是在寻找一个自定义消息时，有没有结果。 我只是在寻找一种方法来在执行Ajax调用时强制显示"No matching records found" ，并且该函数不会产生任何结果。

Answer 1

强制显示"No matching records found"消息的一种方法是使用clear()和draw()方法。

如果需要在运行时中更改消息，则可以使用datatables.context[0].oLanguage.sEmptyTable属性。

您的情况是：

searchResults.context[0].oLanguage.sEmptyTable = "No matching records found...";
searchResults.clear().draw();

像这样：

 $(function() { var dataSet = [ ["Tiger Nixon", "System Architect", "Edinburgh", "5421", "2011/04/25", "$320,800"], ["Garrett Winters", "Accountant", "Tokyo", "8422", "2011/07/25", "$170,750"], ["Ashton Cox", "Junior Technical Author", "San Francisco", "1562", "2009/01/12", "$86,000"], ["Cedric Kelly", "Senior Javascript Developer", "Edinburgh", "6224", "2012/03/29", "$433,060"], ["Airi Satou", "Accountant", "Tokyo", "5407", "2008/11/28", "$162,700"], ["Brielle Williamson", "Integration Specialist", "New York", "4804", "2012/12/02", "$372,000"], ["Herrod Chandler", "Sales Assistant", "San Francisco", "9608", "2012/08/06", "$137,500"], ["Rhona Davidson", "Integration Specialist", "Tokyo", "6200", "2010/10/14", "$327,900"], ["Colleen Hurst", "Javascript Developer", "San Francisco", "2360", "2009/09/15", "$205,500"], ["Sonya Frost", "Software Engineer", "Edinburgh", "1667", "2008/12/13", "$103,600"], ["Jena Gaines", "Office Manager", "London", "3814", "2008/12/19", "$90,560"], ["Quinn Flynn", "Support Lead", "Edinburgh", "9497", "2013/03/03", "$342,000"], ["Charde Marshall", "Regional Director", "San Francisco", "6741", "2008/10/16", "$470,600"], ["Haley Kennedy", "Senior Marketing Designer", "London", "3597", "2012/12/18", "$313,500"], ["Tatyana Fitzpatrick", "Regional Director", "London", "1965", "2010/03/17", "$385,750"], ["Michael Silva", "Marketing Designer", "London", "1581", "2012/11/27", "$198,500"], ["Paul Byrd", "Chief Financial Officer (CFO)", "New York", "3059", "2010/06/09", "$725,000"], ["Gloria Little", "Systems Administrator", "New York", "1721", "2009/04/10", "$237,500"], ["Bradley Greer", "Software Engineer", "London", "2558", "2012/10/13", "$132,000"], ["Dai Rios", "Personnel Lead", "Edinburgh", "2290", "2012/09/26", "$217,500"], ["Jenette Caldwell", "Development Lead", "New York", "1937", "2011/09/03", "$345,000"], ["Yuri Berry", "Chief Marketing Officer (CMO)", "New York", "6154", "2009/06/25", "$675,000"], ["Caesar Vance", "Pre-Sales Support", "New York", "8330", "2011/12/12", "$106,450"], ["Doris Wilder", "Sales Assistant", "Sidney", "3023", "2010/09/20", "$85,600"], ["Angelica Ramos", "Chief Executive Officer (CEO)", "London", "5797", "2009/10/09", "$1,200,000"], ["Gavin Joyce", "Developer", "Edinburgh", "8822", "2010/12/22", "$92,575"], ["Jennifer Chang", "Regional Director", "Singapore", "9239", "2010/11/14", "$357,650"], ["Brenden Wagner", "Software Engineer", "San Francisco", "1314", "2011/06/07", "$206,850"], ["Fiona Green", "Chief Operating Officer (COO)", "San Francisco", "2947", "2010/03/11", "$850,000"], ["Shou Itou", "Regional Marketing", "Tokyo", "8899", "2011/08/14", "$163,000"], ["Michelle House", "Integration Specialist", "Sidney", "2769", "2011/06/02", "$95,400"], ["Suki Burks", "Developer", "London", "6832", "2009/10/22", "$114,500"], ["Prescott Bartlett", "Technical Author", "London", "3606", "2011/05/07", "$145,000"], ["Gavin Cortez", "Team Leader", "San Francisco", "2860", "2008/10/26", "$235,500"], ["Martena Mccray", "Post-Sales support", "Edinburgh", "8240", "2011/03/09", "$324,050"], ["Unity Butler", "Marketing Designer", "San Francisco", "5384", "2009/12/09", "$85,675"] ]; var columnDefs = [{ title: "Name" }, { title: "Position" }, { title: "Office" }, { title: "Extn." }, { title: "Start date" }, { title: "Salary" }]; var searchResults; searchResults = $('#example').DataTable({ "sPaginationType": "full_numbers", data: dataSet, columns: columnDefs, dom: 'Bfrtip', // Needs button container select: 'single', responsive: true, buttons: [] }); // Setting the required behaviour to this question. document.getElementById("btnSetEmptyResults").onclick = function() { searchResults.context[0].oLanguage.sEmptyTable = "No matching records found..."; searchResults.clear().draw(); }; }); 

 table.dataTable tbody>tr.selected, table.dataTable tbody>tr>.selected { background-color: #A2D3F6; } 

 <link rel="stylesheet" type="text/css" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css"> <link rel="stylesheet" type="text/css" href="https://cdn.datatables.net/responsive/2.0.2/css/responsive.dataTables.min.css"> <link rel="stylesheet" type="text/css" href="https://cdn.datatables.net/1.10.11/css/jquery.dataTables.min.css"> <link rel="stylesheet" type="text/css" href="https://cdn.datatables.net/buttons/1.1.2/css/buttons.dataTables.min.css"> <link rel="stylesheet" type="text/css" href="https://cdn.datatables.net/select/1.1.2/css/select.dataTables.min.css"> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script> <script type="text/javascript" src="https://cdn.datatables.net/1.10.11/js/jquery.dataTables.min.js"></script> <script type="text/javascript" src="https://cdn.datatables.net/buttons/1.1.2/js/dataTables.buttons.min.js"></script> <script type="text/javascript" src="https://cdn.datatables.net/select/1.1.2/js/dataTables.select.min.js"></script> <script type="text/javascript" src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script> <script type="text/javascript" src="https://cdn.datatables.net/responsive/2.0.2/js/dataTables.responsive.min.js"></script> <div class="container"> <button id="btnSetEmptyResults" class="dt-button" type="button"> Set empty results </button> <table cellpadding="0" cellspacing="0" border="0" class="dataTable table table-striped" id="example"> </table> </div> 

更新：

如果需要打印回所有数据，则需要使用rows.add(data)方法，其中data参数是您最初在datatable插件中用于打印的先前数据。 然后再次使用.draw()方法呈现表：

searchResults.rows.add(assetId).draw();

在此演示：2秒钟之后，将清洗后打印回表中的所有数据datatable 。

 $(function() { var dataSet = [ ["Tiger Nixon", "System Architect", "Edinburgh", "5421", "2011/04/25", "$320,800"], ["Garrett Winters", "Accountant", "Tokyo", "8422", "2011/07/25", "$170,750"], ["Ashton Cox", "Junior Technical Author", "San Francisco", "1562", "2009/01/12", "$86,000"], ["Cedric Kelly", "Senior Javascript Developer", "Edinburgh", "6224", "2012/03/29", "$433,060"], ["Airi Satou", "Accountant", "Tokyo", "5407", "2008/11/28", "$162,700"], ["Brielle Williamson", "Integration Specialist", "New York", "4804", "2012/12/02", "$372,000"], ["Herrod Chandler", "Sales Assistant", "San Francisco", "9608", "2012/08/06", "$137,500"], ["Rhona Davidson", "Integration Specialist", "Tokyo", "6200", "2010/10/14", "$327,900"], ["Colleen Hurst", "Javascript Developer", "San Francisco", "2360", "2009/09/15", "$205,500"], ["Sonya Frost", "Software Engineer", "Edinburgh", "1667", "2008/12/13", "$103,600"], ["Jena Gaines", "Office Manager", "London", "3814", "2008/12/19", "$90,560"], ["Quinn Flynn", "Support Lead", "Edinburgh", "9497", "2013/03/03", "$342,000"], ["Charde Marshall", "Regional Director", "San Francisco", "6741", "2008/10/16", "$470,600"], ["Haley Kennedy", "Senior Marketing Designer", "London", "3597", "2012/12/18", "$313,500"], ["Tatyana Fitzpatrick", "Regional Director", "London", "1965", "2010/03/17", "$385,750"], ["Michael Silva", "Marketing Designer", "London", "1581", "2012/11/27", "$198,500"], ["Paul Byrd", "Chief Financial Officer (CFO)", "New York", "3059", "2010/06/09", "$725,000"], ["Gloria Little", "Systems Administrator", "New York", "1721", "2009/04/10", "$237,500"], ["Bradley Greer", "Software Engineer", "London", "2558", "2012/10/13", "$132,000"], ["Dai Rios", "Personnel Lead", "Edinburgh", "2290", "2012/09/26", "$217,500"], ["Jenette Caldwell", "Development Lead", "New York", "1937", "2011/09/03", "$345,000"], ["Yuri Berry", "Chief Marketing Officer (CMO)", "New York", "6154", "2009/06/25", "$675,000"], ["Caesar Vance", "Pre-Sales Support", "New York", "8330", "2011/12/12", "$106,450"], ["Doris Wilder", "Sales Assistant", "Sidney", "3023", "2010/09/20", "$85,600"], ["Angelica Ramos", "Chief Executive Officer (CEO)", "London", "5797", "2009/10/09", "$1,200,000"], ["Gavin Joyce", "Developer", "Edinburgh", "8822", "2010/12/22", "$92,575"], ["Jennifer Chang", "Regional Director", "Singapore", "9239", "2010/11/14", "$357,650"], ["Brenden Wagner", "Software Engineer", "San Francisco", "1314", "2011/06/07", "$206,850"], ["Fiona Green", "Chief Operating Officer (COO)", "San Francisco", "2947", "2010/03/11", "$850,000"], ["Shou Itou", "Regional Marketing", "Tokyo", "8899", "2011/08/14", "$163,000"], ["Michelle House", "Integration Specialist", "Sidney", "2769", "2011/06/02", "$95,400"], ["Suki Burks", "Developer", "London", "6832", "2009/10/22", "$114,500"], ["Prescott Bartlett", "Technical Author", "London", "3606", "2011/05/07", "$145,000"], ["Gavin Cortez", "Team Leader", "San Francisco", "2860", "2008/10/26", "$235,500"], ["Martena Mccray", "Post-Sales support", "Edinburgh", "8240", "2011/03/09", "$324,050"], ["Unity Butler", "Marketing Designer", "San Francisco", "5384", "2009/12/09", "$85,675"] ]; var columnDefs = [{ title: "Name" }, { title: "Position" }, { title: "Office" }, { title: "Extn." }, { title: "Start date" }, { title: "Salary" }]; var searchResults; searchResults = $('#example').DataTable({ "sPaginationType": "full_numbers", data: dataSet, columns: columnDefs, dom: 'Bfrtip', // Needs button container select: 'single', responsive: true, buttons: [] }); // Setting the required behaviour to this question. document.getElementById("btnSetEmptyResults").onclick = function() { searchResults.context[0].oLanguage.sEmptyTable = "No matching records found..."; searchResults.clear().draw(); // Get back all the data after 2 seconds. setTimeout(function() { searchResults.rows.add(dataSet).draw(); }, 2000); }; }); 

 table.dataTable tbody>tr.selected, table.dataTable tbody>tr>.selected { background-color: #A2D3F6; } 

 <link rel="stylesheet" type="text/css" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css"> <link rel="stylesheet" type="text/css" href="https://cdn.datatables.net/responsive/2.0.2/css/responsive.dataTables.min.css"> <link rel="stylesheet" type="text/css" href="https://cdn.datatables.net/1.10.11/css/jquery.dataTables.min.css"> <link rel="stylesheet" type="text/css" href="https://cdn.datatables.net/buttons/1.1.2/css/buttons.dataTables.min.css"> <link rel="stylesheet" type="text/css" href="https://cdn.datatables.net/select/1.1.2/css/select.dataTables.min.css"> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script> <script type="text/javascript" src="https://cdn.datatables.net/1.10.11/js/jquery.dataTables.min.js"></script> <script type="text/javascript" src="https://cdn.datatables.net/buttons/1.1.2/js/dataTables.buttons.min.js"></script> <script type="text/javascript" src="https://cdn.datatables.net/select/1.1.2/js/dataTables.select.min.js"></script> <script type="text/javascript" src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script> <script type="text/javascript" src="https://cdn.datatables.net/responsive/2.0.2/js/dataTables.responsive.min.js"></script> <div class="container"> <button id="btnSetEmptyResults" class="dt-button" type="button"> Set empty results </button> <table cellpadding="0" cellspacing="0" border="0" class="dataTable table table-striped" id="example"> </table> </div>