eventHandlers

Optional. Adds event handlers to the HTML elements of a custom template in a cell, or to the HTML elements defined in the data set, or to the header/footer cell

eventHandlers?: {
    [eventName: string]: {
        [className: string]: (event: Event, item: object) => void; 
    };
};

Parameters:

The eventHandlers object includes a set of key:value pairs, where:

key	the name of the event. Note that at the beginning of the event name the 'on' prefix is used (onclick, onmouseover).
value	an object that contains a key:value pair, where: key is the CSS class name that the handler will be applied to value is a function that takes two parameters: event - an event object item - an object with two attributes: - row - an object with a row configuration - column - an object with a column configuration

Example

const treeGrid = new dhx.TreeGrid("treegrid", {
    columns: [
        { width: 280, id: "name", header: [{ text: "Book Name", css:"header_book" }] },
        {
            width: 160, id: "price", type: "string", 
            header: [{ text: "Terms and conditions", colspan: 2 }, { text: "Price" }],
            htmlEnable: true,
            // define a custom template for the column's cells
            template: (text, row, column) => {
                return text ? "<div className='cell__template'>$ " + text + "</div>" : "";
            }
        },
        // more columns
    ],
    data: data,
    eventHandlers: {
        // add an event handler to the header cell
        onclick: {
           header_book: (event, data) => {
                console.log(JSON.stringify(data.col, null, 2)); 
            }
        },
        // add an event handler to the HTML element of the custom template of cells
        onmouseover: {
            cell__template: (event, data) => {
                console.log(JSON.stringify(data.row, null, 2));
            }
        }
    }
});

Related sample: TreeGrid. Handling events in template

An example of adding event handlers to the HTML elements defined in the data set of TreeGrid is given below:

const data = [
    {
        "name": "A Time to Kill",
        "price": "12.25",
        "cover": "Hardcover",
        "ships": "12 hours",
        "inStock": "<div className='cell__html'><input type='checkbox' checked />80</div>", 
        "parent": "c.1"
    },
    // more options
];

const grid = new dhx.Grid("grid", {
    columns: [
        { 
            width: 160, id: "inStock", type: "string", 
            header: [{ text: "In stock" }], 
            htmlEnable: true 
        }, 
        // more options
    ],
    data: data,
    eventHandlers: {
        onmouseover: {
            cell__html: (event, data) => {
                console.log(JSON.stringify(data.col, null, 2)); 
            } 
        } 
    } 
});

Change log:

Added in v7.0
The ability to add event handlers for the header/footer added in v8.3