六、JavaScript专题之数组取最大值和最小值

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数组取最大值、最小值的常用实现方式：

apply

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var arr = [11, 22, 33, 44, 22, 15, 76];
console.log(Math.max.apply(null, arr));

循环遍历

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var arr = [11, 22, 33, 44, 22, 15, 76];

var result = arr[0];
for (var i = 1; i < arr.length; i++) {
  result = Math.max(result, arr[i]);
}
console.log(result);

ES6

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var arr = [11, 22, 33, 44, 22, 15, 76];
console.log(Math.max(...arr));

排序取值

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var arr = [11, 22, 33, 44, 22, 15, 76];

function max(arr) {
  return arr
    .sort((a, b) => a - b)
    .slice()
    .pop();
}
console.log(max(arr));

reduce

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var arr = [11, 22, 33, 44, 22, 15, 76];

function max(prev, next) {
  return Math.max(prev, next);
}
console.log(arr.reduce(max));

eval

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var arr = [11, 22, 33, 44, 22, 15, 76];

var max = eval("Math.max(" + arr + ")");
console.log(max);

暂时总结到这里，后续再补充。