JSON数据嵌套的问题！！！

muyu

您好，请问，如何解决JSON嵌套的问题，怎么把数据获取出来呢？？
JSON：

1. [{"supplierList":[{"id":2,"supplierId":"XYD-xydxyd","supplierName":"xydxyd","supplierContacts":null,"supplierCall":null,"supplierAddress":null,"remarks":""}],"typeList":[{"id":2,"typeId":null,"typeNum":"WL-001","typeName":"散热器WL-001","typeDesc":null}],"id":2,"partsSummary":"","partsDanhao":"XYD-WLRK-2017919-002","supplierId":"XYD-xydxyd","typeNum":"WL-001","partsName":"123","unit":"个","buycounts":123,"sellcounts":1,"flag":"1","date":"2017-09-19 18:07:13","remarks":""},{"supplierList":[{"id":4,"supplierId":"XYD-xydxyd","supplierName":"xydxyd","supplierContacts":null,"supplierCall":null,"supplierAddress":null,"remarks":"321"}],"typeList":[{"id":4,"typeId":null,"typeNum":"WL-001","typeName":"散热器WL-001","typeDesc":null}],"id":4,"partsSummary":null,"partsDanhao":"XYD-WLCK-2017920-001","supplierId":"XYD-xydxyd","typeNum":"WL-001","partsName":"123","unit":"个","buycounts":1,"sellcounts":-321,"flag":"2","date":"2017-08-20 11:46:54","remarks":"321"},{"supplierList":[{"id":5,"supplierId":"XYD-IBM","supplierName":"IBM","supplierContacts":null,"supplierCall":null,"supplierAddress":null,"remarks":"测试你能如何！"}],"typeList":[{"id":5,"typeId":null,"typeNum":"WL-001","typeName":"散热器WL-001","typeDesc":null}],"id":5,"partsSummary":null,"partsDanhao":"XYD-WLCK-2017920-002","supplierId":"XYD-IBM","typeNum":"WL-001","partsName":"中央处理散热器","unit":"台","buycounts":1,"sellcounts":100,"flag":"2","date":"2017-09-20 15:17:19","remarks":"测试你能如何！"}]

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字段：：

1. <div field="typeName" width="100" headerAlign="center" renderer="getType" allowSort="true">类别</div>

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function我了创建了，但是没效果：：

1. function getType(value) {
   
2.                 alert(value.typeNum);
   
3.                 return value.typeNum;
   
4. ｝

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大神，帮我一下啊！！！谢谢！！！

felt

我们getType默认参数是e。你这里要显示什么？
你这value又是什么？你这列field=“typeName",你的数据里面都没有typeName字段，显示什么？