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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");
}