SOURCE

document.querySelector('#table-demo-promiseCode').GM({
    gridManagerName: 'demo-promiseCode',
    supportAdjust: false,
    supportDrag: false,
    ajaxData: (settings, params) => {
        const url = 'https://www.lovejavascript.com/learnLinkManager/getLearnLinkList';
        // 返回一个promise
        return fetch(url).then(res => res.json());
    },
    columnData: [
        {
            key: 'name',
            text: '名称'
        },{
            key: 'info',
            text: '说明'
        },{
            key: 'url',
            text: 'url'
        }
    ]
});

<table id='table-demo-promiseCode'></table>