javascript - jqGrid 创建单独的函数

Question

如何将 function subGridRowExpanded 分离到另一个函数并转换为 subGridRowExpanded : 。

subGrid: Hierarchy,

subGridOptions : {
   plusicon : "ace-icon fa fa-plus center bigger-110 blue",
   minusicon  : "ace-icon fa fa-minus center bigger-110 blue",
   openicon : "ace-icon fa fa-chevron-right center orange" }, 
subGridRowExpanded: function subGridRowExpanded(subgrid_id, row_id) 
{ 
   //somecode
}

Answer 1

我不确定我是否正确理解你的问题。我想您不想使用匿名函数作为subGridRowExpanded的值。如果您在 JavaScript 中有两种标准方式:

1) 定义变量并为其分配匿名函数。

var mySubGridRowExpanded = function (subgridDivId, rowId) {
        // here one can use 'this' to access to the grid
        // for example
        //
        // var mainGridPrefix = $(this).jqGrid("getGridParam", "idPrefix"),
        //     pureRowId = $.jgrid.stripPref(mainGridPrefix, rowId);

        // create empty table and div with unique ids which we construct base on
        // id of subgrid div created by jqGrid before calling of mySubGridRowExpanded
        var $subgrid = $("<table id='" + subgridDivId + "_t'></table>" +
                         "<div id='" + subgridDivId + "_p" + "'></div>");

        // append the subgrid to the subgrid div
        $subgrid.appendTo("#" + $.jgrid.jqID(subgridDivId));

        // create subgrid as jqGrid
        $subgrid.jqGrid({
            ...
        });
    };

2) 像您在其他计算机语言中所知道的那样定义命名的函数。使用术语function statement在 Javascript 中的情况。前一种方式(使用 var mySubGridRowExpanded = function (subgridDivId, rowId) {...};)一个名称 function expression 。您可以使用该函数的名称作为 jqGrid 的 subGridRowExpanded 属性的值。

function mySubGridRowExpanded (subgridDivId, rowId) {
    // the same code as above with small disadvantage
    // that one could have warnings by some JavaScript
    // validators that 'this' could be undefined.
}

在这两种情况下，您都可以使用 jqGrid 选项，例如

subGrid: true,
subGridOptions : {
    plusicon : "ace-icon fa fa-plus center bigger-110 blue",
    minusicon  : "ace-icon fa fa-minus center bigger-110 blue",
    openicon : "ace-icon fa fa-chevron-right center orange" }, 
subGridRowExpanded: mySubGridRowExpanded

正如我在我最喜欢的语言中所知道的那样，JavaScript 有另一种函数语义，因为人们定义类和对象的方式不同。所以我个人更喜欢第一种方式(函数表达式)定义mySubGridRowExpanded function (var mySubGridRowExpanded = function (subgridDivId, rowId) {...};)