javascript - 表格列表后显示谁是第一名的持有者

Question

我有一个 JSON 数据表。但在那之后，我想告诉它谁是第一名。我尝试了很多次但我没有得到它。 PFB..

var studentsList = [
    { "id": "1", "firstName": "rajesh", "lastName": "kumar", "sub1": "35", "sub2": "55", "sub3": "45" },
    { "id": "2", "firstName": "ranjith", "lastName": "rajesh", "sub1": "56", "sub2": "65", "sub3": "44" },
    { "id": "3", "firstName": "arun", "lastName": "LK", "sub1": "48", "sub2": "89", "sub3": "88" },
    { "id": "4", "firstName": "abinaya", "lastName": "Vishwa", "sub1": "65", "sub2": "67", "sub3": "65" },
    { "id": "5", "firstName": "ashok", "lastName": "kumar", "sub1": "33", "sub2": "44", "sub3": "100" },
    { "id": "6", "firstName": "ashwini", "lastName": "kumar", "sub1": "89", "sub2": "35", "sub3": "100" },
    { "id": "7", "firstName": "karthick", "lastName": "kanagaraj", "sub1": "90", "sub2": "89", "sub3": "63" },
    { "id": "8", "firstName": "saravanan", "lastName": "fransis", "sub1": "84", "sub2": "81", "sub3": "83" },
    { "id": "9", "firstName": "Antoty", "lastName": "john", "sub1": "55", "sub2": "100", "sub3": "65" },
    { "id": "10", "firstName": "santhosh", "lastName": "Arun", "sub1": "33", "sub2": "100", "sub3": "83" }
];

Answer 1

只需迭代数组并跟踪当前最大值。

const studentsList = [
	{ "id": "1", "firstName": "rajesh", "lastName": "kumar", "sub1": "35", "sub2": "55", "sub3": "45" },
	{ "id": "2", "firstName": "ranjith", "lastName": "rajesh", "sub1": "56", "sub2": "65", "sub3": "44" },
	{ "id": "3", "firstName": "arun", "lastName": "LK", "sub1": "48", "sub2": "89", "sub3": "88" },
	{ "id": "4", "firstName": "abinaya", "lastName": "Vishwa", "sub1": "65", "sub2": "67", "sub3": "65" },
	{ "id": "5", "firstName": "ashok", "lastName": "kumar", "sub1": "33", "sub2": "44", "sub3": "100" },
	{ "id": "6", "firstName": "ashwini", "lastName": "kumar", "sub1": "89", "sub2": "35", "sub3": "100" },
	{ "id": "7", "firstName": "karthick", "lastName": "kanagaraj", "sub1": "90", "sub2": "89", "sub3": "63" },
	{ "id": "8", "firstName": "saravanan", "lastName": "fransis", "sub1": "84", "sub2": "81", "sub3": "83" },
	{ "id": "9", "firstName": "Antoty", "lastName": "john", "sub1": "55", "sub2": "100", "sub3": "65" },
	{ "id": "10", "firstName": "santhosh", "lastName": "Arun", "sub1": "33", "sub2": "100", "sub3": "83" }
];

let highestMarks = 0, 
      highestMarksIndex = 0;
      
studentsList.reduce((acc, curr, index) => {
	const totalMarks = curr.sub1 + curr.sub2 + curr.sub3;
	
	if (totalMarks > highestMarks) {
		highestMarks = totalMarks;
		highestMarksIndex = index;
	}
	return acc;
}, {});

console.log('Highest marks student', studentsList[highestMarksIndex]);