摘要：
将数组arr2插入到数组arr1的index位置：var arr1 = ['a', 'b', 'c'];var arr2 = ['1', '2', '3'];var index = 1;arr2.unshift(index, 0);Array.prototype.splice.apply(arr1, arr2);console.log(arr1);显示结果：["a", "1", "2", "3", "b&quo 阅读全文
摘要：
ie7下的z-index bug 阅读全文