JSFiddle - React, Tailwind, and code Playground

JavaScript

function dumpObject(obj) 
{     
    var output = "";     
    for (var i in obj) 
    {         
        var msg = i + "= " + obj[i];         
        output += msg + "\n";     
    }     
    return output; 
} 

var myObject = {
   backgroundColor: new echarts.graphic.RadialGradient(0.3, 0.3, 0.8, [{
            "offset": 0,
            "color": '#f7f8fa'
        }, {
            "offset": 1,
            "color": '#cdd0d5'
        }]),
        title: {
            text: '1990 与 2015 年各国家人均寿命与 GDP'
        },
        legend: {
            right: 10,
            data: ['1990', '2015']
        },
        xAxis: {
            splitLine: {
                lineStyle: {
                    type: 'dashed'
                }
            }
        },
        yAxis: {
            splitLine: {
                lineStyle: {
                    type: 'dashed'
                }
            },
            scale: true
        }
}
    
alert( dumpObject(myObject) );