浏览器端保存数据到本地文件

function  localSave(data:any, filename: string){

        if(!data) {

            console.error('Console.save: No data')

            return;

        }

        if(!filename) filename = 'console.json'

        if(typeof data === "object"){

            data = JSON.stringify(data, undefined, 4)

        }

        var blob = new Blob([data], {type: 'text/json'}),

        e = document.createEvent('MouseEvents'),

        a = document.createElement('a')

        a.download = filename

        a.href = window.URL.createObjectURL(blob)

        a.dataset.downloadurl = ['text/json', a.download, a.href].join(':')

        e.initMouseEvent('click', true, false, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null)

        a.dispatchEvent(e)

}