Access jqgrid elements using a javascript

I am using treegrid of jqgrid, in which i want multiselect which is not possible , so i explicitely put a checkbox column. Now I want to know how to iterate each row of tree grid and access particular cell of that row, so that I can do specific action on it. Thank in advance.

Oleg

The simplest way to implement your requirements seems me to include additional column in the tree grid which has the checkbox:

You have not posted the code of the grid which you are using. It is even not clear if you are using local tree grid or a remote one. In the following example I am showing how to implement the checkbox from the "Enabled" column in case of local grid. So you can have the following results:

The corresponding demo you will find here.

The HTML code is:

<fieldset style="float:left">
    <input id="getSelected" type="button" value="Get Selected"/>
</fieldset>
<fieldset style="clear:both; float:left">
    <legend>Seleceted Ids</legend>
    <p id="ids"></p>
</fieldset>
<fieldset style="clear:both; float:left">
    <legend>Selected Names</legend>
    <p id="names"></p>
</fieldset>

<div style="clear:left">
    <table id="treegrid"><tr><td/></tr></table>
</div>

and the JavaScript code:

$(function () {
    'use strict';
    var mydata = [
        { id: "1", name: "Cash", num: "100", debit: "400.00", credit: "250.00", balance: "150.00", enbl: "1",
            level: "0", parent: "null", isLeaf: false, expanded: false },
        { id: "2", name: "Cash 1", num: "1", debit: "300.00", credit: "200.00", balance: "100.00", enbl: "0",
            level: "1", parent: "1", isLeaf: false, expanded: false, loaded: true },
        { id: "3", name: "Sub Cash 1", num: "1", debit: "300.00", credit: "200.00", balance: "100.00", enbl: "1",
            level: "2", parent: "2", isLeaf: true, expanded: false },
        { id: "4", name: "Cash 2", num: "2", debit: "100.00", credit: "50.00", balance: "50.00", enbl: "0",
            level: "1", parent: "1", isLeaf: true, expanded: false },
        { id: "5", name: "Bank\'s", num: "200", debit: "1500.00", redit: "1000.00", balance: "500.00", enbl: "1",
            level: "0", parent: "null", isLeaf: false, expanded: true, loaded: true },
        { id: "6", name: "Bank 1", num: "1", debit: "500.00", credit: "0.00", balance: "500.00", enbl: "0",
            level: "1", parent: "5", isLeaf: true, expanded: false },
        { id: "7", name: "Bank 2", num: "2", debit: "1000.00", credit: "1000.00", balance: "0.00", enbl: "1",
            level: "1", parent: "5", isLeaf: true, expanded: false },
        { id: "8", name: "Fixed asset", num: "300", debit: "0.00", credit: "1000.00", balance: "-1000.00", enbl: "0",
            level: "0", parent: "null", isLeaf: true, expanded: false }],
        grid = $("#treegrid"),
        getColumnIndexByName = function (columnName) {
            var cm = grid.jqGrid('getGridParam', 'colModel'), i, l = cm.length;
            for (i = 0; i < l; i++) {
                if (cm[i].name === columnName) {
                    return i; // return the index
                }
            }
            return -1;
        },
        iCol;

    grid.jqGrid({
        datatype: "local",
        colNames: ["id", "Account", "Acc Num", "Debit", "Credit", "Balance", "Enabled"],
        colModel: [
            {name: 'id', index: 'id', width: 1, hidden: true, key: true},
            {name: 'name', index: 'name', width: 180},
            {name: 'num', index: 'acc_num', width: 80, align: "center"},
            {name: 'debit', index: 'debit', width: 80, align: "right"},
            {name: 'credit', index: 'credit', width: 80, align: "right"},
            {name: 'balance', index: 'balance', width: 80, align: "right"},
            {name: 'enbl', index: 'enbl', width: 60, align: 'center',
                formatter: 'checkbox', editoptions: {value: '1:0'},
                formatoptions: {disabled: false}}
        ],
        height: '100%',
        rowNum: 10000,
        sortname: 'id',
        treeGrid: true,
        loadonce: true,
        treeGridModel: 'adjacency',
        treedatatype: 'local',
        ExpandColumn: 'name',
        caption: 'Demonstrate how to use Tree Grid for the Adjacency Set Model'
    });
    // we have to use addJSONData to load the data
    grid[0].addJSONData({
        total: 1,
        page: 1,
        records: mydata.length,
        rows: mydata
    });

    iCol = getColumnIndexByName('enbl');
    // nth-child need 1-based index so we use (iCol+1) below
    $("tbody>tr.jqgrow>td:nth-child(" + (iCol + 1) + ")>input", grid[0]).change(function (e) {
        var isChecked = $(this).attr("checked"), rowid, dataIndex,
            tr = $(e.target, grid[0].rows).closest("tr.jqgrow");
        if (tr.length > 0) {
            rowid = tr[0].id;
            dataIndex = grid[0].p._index[rowid];
            if (typeof dataIndex !== "undefined" && dataIndex >= 0) {
                grid[0].p.data[dataIndex].enbl = isChecked ? "1" : "0";
            }
        }
        e.preventDefault();
    });

    $("#getSelected").click(function () {
        var ids = [], names = [], i, data = grid[0].p.data, l = data.length, dataItem;
        for (i = 0; i < l; i++) {
            dataItem = data[i];
            if (dataItem.enbl === "1") {
                ids.push(dataItem.id);
                names.push(dataItem.name);
            }
        }
        $("#ids").html(ids.join(", "));
        $("#names").html(names.join(", "));
    });
});

I think there not so difficult.

$("#YourTreegridContainerTag").find(":input[type=='checkbox']").each(function() { $(this).attr("cheked", "checked"); });

and for disablling:

$("#YourTreegridContainerTag").find(":input[type=='checkbox']").each(function() { $(this).removeAttr("cheked"); });

来源：https://stackoverflow.com/questions/5817489/access-jqgrid-elements-using-a-javascript

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treegrid