Json数据如何删除相同的两个相同的元素！

Question

怎么删除 这个json数组中相同的数据 只要相同两条数据都删除
把两个{gx: "粗扯", pgbh: "202201080001"} 都删除点 只剩下 单一的数据

Answer 1

function removeDuplicates(arr) {
    const result = [];
    const duplicatesIndices = [];
    // Loop through each item in the original array
    arr.forEach((current, index) => {
        if (duplicatesIndices.includes(index)) return;
        result.push(current);
        // Loop through each other item on array after the current one
        for (let comparisonIndex = index + 1; comparisonIndex < arr.length; comparisonIndex++) {
            const comparison = arr[comparisonIndex];
            const currentKeys = Object.keys(current);
            const comparisonKeys = Object.keys(comparison);
            // Check number of keys in objects
            if (currentKeys.length !== comparisonKeys.length) continue;
            // Check key names
            const currentKeysString = currentKeys.sort().join("").toLowerCase();
            const comparisonKeysString = comparisonKeys.sort().join("").toLowerCase();
            if (currentKeysString !== comparisonKeysString) continue;
            // Check values
            let valuesEqual = true;
            for (let i = 0; i < currentKeys.length; i++) {
                const key = currentKeys[i];
                if ( current[key] !== comparison[key] ) {
                    valuesEqual = false;
                    break;
                }
            }
            if (valuesEqual) duplicatesIndices.push(comparisonIndex);
        } // end for loop
    }); // end arr.forEach()
    return result;
}

const books = [
    {
        name: "My Sister the Serial Killer",  
        author: "Oyinkan Braithwaite" 
    },
    {
        name: "Educated",  
        author: "Tara Westover" 
    },
    {
        name: "My Sister the Serial Killer",  
        author: "Oyinkan Braithwaite" 
    }
];

console.log(removeDuplicates(books))
// [
//  {
//    name: 'My Sister the Serial Killer',
//    author: 'Oyinkan Braithwaite'
//  },
//  { name: 'Educated', author: 'Tara Westover' }
// ]

可以参考下下面这篇博客

从一个数组中移除重复对象_前端开发博客-CSDN博客 在JavaScript项目实践中，我们可能会经常需要移除重复对象的例子，本文通过一个案例来详细解答，并给出了最优解，希望对你有所帮助。假设有下面这个数组对象，让你来删除重复项：const... https://blog.csdn.net/lgno2/article/details/109446517