JavaScript判断两个数组是否相同

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/**
 * 这是一个Array类的拓展方法，用于检测数组是否相同
 */
if(Array.prototype.equals)
    console.warn("Overriding existing Array.prototype.equals. Possible causes: New API defines the method, there's a framework conflict or you've got double inclusions in your code.");
Array.prototype.equals = function (array) {
    if (!array)
        return false;
    if (this.length != array.length)
        return false;

    for (let i = 0, l = this.length; i < l; i++) {
        if (this[i] instanceof Array && array[i] instanceof Array) {
            if (!this[i].equals(array[i]))
                return false;
        }
        else if (this[i] != array[i]) {
            return false;
        }
    }
    return true;
}
Object.defineProperty(Array.prototype, "equals", {enumerable: false});

测试

    let a = [0,2,3,4,5,6];
    let b = [1,2,3,4,5,6];
    let c = [0,2,3,4,5,6];
    if (a.equals(b)) {
        console.log("a与b两个数组相同");
    } else {
        console.log("a与b不相同");
    }
    if (a.equals(c)) {
        console.log("a与c相同");
    } else {
        console.log("a与c不相同");
    }