因为json不是字符串，要怎么在开发者工具中用方法JSON.stringify()转成字符串？
一直找不到该怎么解决←这个问题
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你的二维数组格式有误吧？
参考代码
const array = [ [1, 2, 3], [4, 5, 6], [7, 8, 9] ]; const jsonString = JSON.stringify(array); console.log(jsonString); // "[[1,2,3],[4,5,6],[7,8,9]]"