echarts4.0.3 iOS x,y轴formatter出错

[muwan]

One-line summary [问题简述]

echarts4.0.3 iOS x,y轴formatter出错 在echarts 3版本中未出现问题

Version & Environment [版本及环境]

• ECharts version [ECharts 版本]:4.0.3
• Browser version [浏览器类型和版本]:WKWebView
• OS Version [操作系统类型和版本]:iOS

Expected behaviour [期望结果]

formatter所需要的function可以以字符串形式展示出来

ECharts option [ECharts配置项]

option = {
    "series": [{
        "type": "bar",
        "name": "数值",
        "data": [1, 1, 1, 4]
    }],
    "legend": {
        "y": "top",
        "data": ["数值"],
        "orient": "horizontal",
        "show": true,
        "type": "scroll",
        "x": "center"
    },
    "xAxis": {
        "axisLabel": {
            "show": true,
            "clickable": false,
            "rotate": 45,
            "formatter": "(function(param) { if (param.length > 5) { param = param.substr(0, 5) + '..'; } return param;})"
        },
        "boundaryGap": [0, 0.01],
        "nameTextStyle": {
            "fontSize": 10,
            "padding": [20, 0, 0, 0]
        },
        "nameLocation": "middle",
        "nameGap": 50,
        "type": "value",
        "name": "属地管理"
    },
    "animation": true,
    "title": {
        "show": true,
        "text": ""
    },
    "grid": {
        "zlevel": 0,
        "containLabel": true,
        "show": false,
        "z": 0,
        "borderWidth": 1,
        "left": "5%",
        "right": "5%"
    },
    "tooltip": {
        "show": true
    },
    "yAxis": {
        "axisLabel": {
            "show": true,
            "clickable": false,
            "rotate": 45,
            "formatter": "(function(param) { if (param.length > 5) { param = param.substr(0, 5) + '..'; } return param;})"
        },
        "nameTextStyle": {
            "fontSize": 10,
            "padding": [0, 0, 0, 20]
        },
        "data": ["2013-02", "2014-07", "2017-02", "2017-11"],
        "boundaryGap": [0, 0.01],
        "nameLocation": "end",
        "type": "category",
        "name": "时间",
        "interval": "0"
    },
    "dataZoom": [{
        "end": 100,
        "zoomLock": false,
        "yAxisIndex": 0,
        "start": 0,
        "show": false,
        "filterMode": "filter",
        "type": "inside"
    }],
    "textStyle": {
        "fontSize": 10,
        "width": "5"
    }
}

Other comments [其他信息]

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