jqGrid 动态设置行选中、取消中选中 setSelection使用注意事项
jqGrid可以使用setSelection方法动态设置某行选中或不选中，jqGrid用户手册给出的语法如下：
setSelection(string rowid, [boolean onselectrow])
Toggles a selection of the row with id = rowid; If selected the selrow grid parameter is set to the rowid - in multiselect mode to selarrrow array is added the rowid. The revers if the row is deselected.
参数说明：
- string rowid - the id of the row
- boolean onselectrow - if onselectrow is true (default) then the event onSelectRow and/or triggered event jqGridSelectRow are launched, otherwise not. 选中或取消选中时是否触发jqGridSelectRow事件，true会触发，false不会触发。
从jqGrid用户手册可以看出，setSelection其实是一个toggle函数，当设置行选中时，则取消选中，当该行没有选中时则选中该行，类似jquery的toggleClass，这个用法就有点坑了。通常我们希望的是：
- 设置选中：该行原来没选中则选中，该行原来已经选中则继续选中；
- 取消选中：该行原来没选中则继续保持没选中状态，该行原来选中则取消选中；
为此，我们希望设置行是否选中的函数看起来应该如下：
// rowid, 表格rowId
// selected, 选中还是不选中，true表示选中
// triggerFlag, 是否触发jqGridSelectRow事件
function setSelectionNew(rowid, selected, triggerFlag) {
if (selected) { // 设置选中
if (rowid 行没选中) setSelection(rowid, triggerFlag);
} else { // 设置不选中
if (rowid 行已选中) setSelection(rowid, triggerFlag);
}
}
具体看下述DEMO：
<html>
<head>
<meta charset="UTF-8" />
<title>jggrid 获取选中行title>
<link rel="stylesheet" href="https://cdn.bootcss.com/twitter-bootstrap/3.3.7/css/bootstrap.min.css" />
<link rel="stylesheet" href="https://cdn.bootcss.com/font-awesome/4.5.0/css/font-awesome.min.css" />
<link rel="stylesheet" href="https://cdn.bootcss.com/jqgrid/4.6.0/css/ui.jqgrid.css" />
<script src="https://cdn.bootcss.com/jquery/1.11.1/jquery.min.js">script>
<script src="https://cdn.bootcss.com/jqgrid/4.6.0/js/jquery.jqGrid.min.js">script>
<style>
tr.ui-state-highlight td, tr.selected-row td{background: #dff0d8;}
style>
head>
<body>
<div class="page-content container">
<div class="page-body">
<div class="panel panel-default" id="panel-orders">
<div class="panel-heading">
<button type="button" class="btn btn-primary" onclick="doSelect()">设置第3行选中button>
<button type="button" class="btn btn-primary" onclick="cancelSelect()">取消第3行选中button>
div>
<table id="orders" class="table-bordered">table>
div>
div>
div>
<script type="text/javascript">
var data = [], rowIds = [];
function getBills() {
var rowCount = 10;
for (var i = 0; i < rowCount; i ++) {
data.push({
sid: i,
bill_id: i,
bill_detail: i,
goods_id: i,
unit_id: i,
package_id: i,
ref_detail: i,
goods_no: i + 1,
goods_name: '零件名称' + rowCount + i,
car_type_name: '车型' + rowCount + i,
package_name: '包装器具' + rowCount + i,
unit: i%2==0 ? '件' : '箱',
snp: 0.89,
box_count: rowCount + i,
total_count: rowCount + i,
goods_count: rowCount + i,
out_count: rowCount + i,
bill_no: 'BN0000000' + i,
})
}
$("#orders").jqGrid("clearGridData").jqGrid('setGridParam',{data: data || []}).trigger('reloadGrid');
}
function doSelect() {
var rowId = "3";
if (! $("#jqg_orders_" + rowId).prop("checked")) {
$("#orders").jqGrid("setSelection", rowId, false);
}
}
function cancelSelect() {
var rowId = "3";
if ($("#jqg_orders_" + rowId).prop("checked")) {
$("#orders").jqGrid("setSelection", rowId, false);
}
}
/** jqgrid 扩展 start．**/
$(function() {
$("#orders").jqGrid({
colModel: [
{label: "零件号", name: "goods_no", width: 60},
{label: "零件名称", name: "goods_name", width: 180},
{label: "车型", name: "car_type_name", width: 70},
{label: "包装器具", name: "package_name", width: 70},
{label: "单位", name: "unit", width: 60 },
{label: "装箱率", name: "snp", width: 50, sorttype: "number"},
{label: "需求总数", name: "total_count", width: 70, sorttype: "number"},
{label: "需求数量", name: "goods_count", width: 70,},
{label: "出库数量", name: "out_count", width: 70, sorttype: "number"},
],
datatype: 'local',
rownumbers: true,
height: 300,
rowNum: 1000,
multiselect: true,
});
getBills();
});
script>
body>
html>