Javascript 变量在 object 内部不起作用。但是进入console.log

Question

Javascript 变量在对象内部不起作用。当我使用 console.log(dataPondsRevenue) 变量时，我看到了数据，但出现错误:

SyntaxError: missing ] after element list`!

当我在 data:[] 节点内使用它时:

$('.pondsRevenueBlock').on('click',function(){
    var block_id = $(this).attr('data-id');
    var url='{{ route('WhiteFish.client.pondsRevenueBlockWise') }}';
    $.ajax({
        url:url+'?block_id='+block_id,
    }).done(function(pondsRevenueData){
        var dataPondsRevenue = '';
        $.each(pondsRevenueData, function(index, element) {
            dataPondsRevenue+= '{value:'+element.pondTotalInvest+',name:'+element.name+'},';
        });
        console.log(dataPondsRevenue);

        var eChart_2 = echarts.init(document.getElementById('pondsRevenue'));
        var option1 = {
            tooltip : {
                backgroundColor: 'rgba(33,33,33,1)',
                borderRadius:0,
                padding:10,
                axisPointer: {
                    type: 'cross',
                    label: {
                        backgroundColor: 'rgba(33,33,33,1)'
                    }
                },
                textStyle: {
                    color: '#fff',
                    fontStyle: 'normal',
                    fontWeight: 'normal',
                    fontFamily: "'Open Sans', sans-serif",
                    fontSize: 12
                }   
            },
            // color: ['#0FC5BB', '#92F2EF', '#D0F6F5'],
            color: ['#0FC5BB', '#0FC5BB', '#5AC4CC'],
            series : [
                {
                    name: 'task',
                    type: 'pie',
                    radius : '55%',
                    center: ['50%', '50%'],
                    roseType : 'radius',
                    tooltip : {
                        trigger: 'item',
                        formatter: "{a} <br/>{b} : {c} ({d}%)",
                        backgroundColor: 'rgba(33,33,33,1)',
                        borderRadius:0,
                        padding:10,
                        textStyle: {
                            color: '#fff',
                            fontStyle: 'normal',
                            fontWeight: 'normal',
                            fontFamily: "'Open Sans', sans-serif",
                            fontSize: 12
                        }   
                    },
                    data:[
                        console.log(dataPondsRevenue);
                    ],
                    itemStyle: {
                        emphasis: {
                            shadowBlur: 10,
                            shadowOffsetX: 0,
                            shadowColor: 'rgba(0, 0, 0, 0.5)'
                        }
                    }
                }
            ]
        };
        eChart_2.setOption(option1);
        eChart_2.resize();
    }).fail(function (data) {
        console.log('error');
    });
});

如何解决？

Answer 1

使用数组(以及可选的 JSON.stringify 它；如果是 $.ajax，请查看 contentType at $.ajax docs )，错误要少得多 -容易 - 在您的情况下，末尾总是有一个尾随逗号，这不是有效的 JSON:

console.log("Valid:")
console.log(JSON.parse('{ "whatever": 1 }'))
console.log("Invalid:")
console.log(JSON.parse('{ "whatever": 1, }'))

$('.pondsRevenueBlock').on('click',function(){
    var block_id = $(this).attr('data-id');
    var url='{{ route('WhiteFish.client.pondsRevenueBlockWise') }}';
    $.ajax({
        url:url+'?block_id='+block_id,
        contentType: 'application/json'
    }).done(function(pondsRevenueData){
        var dataPondsRevenue = [];
        $.each(pondsRevenueData, function(index, element) {
            dataPondsRevenue.push({
              value: element.pondTotalInvest,
              name: element.name
            })
        });
        console.log(dataPondsRevenue);

        var eChart_2 = echarts.init(document.getElementById('pondsRevenue'));
        var option1 = {
            tooltip : {
                backgroundColor: 'rgba(33,33,33,1)',
                borderRadius:0,
                padding:10,
                axisPointer: {
                    type: 'cross',
                    label: {
                        backgroundColor: 'rgba(33,33,33,1)'
                    }
                },
                textStyle: {
                    color: '#fff',
                    fontStyle: 'normal',
                    fontWeight: 'normal',
                    fontFamily: "'Open Sans', sans-serif",
                    fontSize: 12
                }   
            },
            // color: ['#0FC5BB', '#92F2EF', '#D0F6F5'],
            color: ['#0FC5BB', '#0FC5BB', '#5AC4CC'],
            series : [
                {
                    name: 'task',
                    type: 'pie',
                    radius : '55%',
                    center: ['50%', '50%'],
                    roseType : 'radius',
                    tooltip : {
                        trigger: 'item',
                        formatter: "{a} <br/>{b} : {c} ({d}%)",
                        backgroundColor: 'rgba(33,33,33,1)',
                        borderRadius:0,
                        padding:10,
                        textStyle: {
                            color: '#fff',
                            fontStyle: 'normal',
                            fontWeight: 'normal',
                            fontFamily: "'Open Sans', sans-serif",
                            fontSize: 12
                        }   
                    },
                    data: JSON.stringify(dataPondsRevenue),
                    itemStyle: {
                        emphasis: {
                            shadowBlur: 10,
                            shadowOffsetX: 0,
                            shadowColor: 'rgba(0, 0, 0, 0.5)'
                        }
                    }
                }
            ]
        };
        eChart_2.setOption(option1);
        eChart_2.resize();
    }).fail(function (data) {
        console.log('error');
    });
});

此外，console.log() 返回 undefined - 您可以只传递变量。