js splice数组拼接函数详解

/**
 * 1.往索引的后面添加元素
 * 2.超过或者小于索引会在数组最后面或者最前面添加元素
 * 3.打印数组元素最好使用for(var i = 0; ivar array = ["one", "two", "four"];
// splice(position, numberOfItemsToRemove, item...)
// 拼接函数(索引位置, 要删除元素的数量, 要增加的元素)
array.splice(2, 0, "three");
array.splice(4, 0, "five","six");
array.splice(100, 0, "seven");
array.splice(0, 0, "zero");
array.splice(-100, 0, "minus one");
for (var i in array) {
    console.log(i + "="+array[i]);
}