//删除红色的元素 splice(下标,长度)
var arr = ['a','b','c','d'];
arr.splice(1,1);
console.log(arr);
//['a','c','d'];
var arr2 = ['a','b','c','d']
arr2.splice(1,2);
console.log(arr2);
//['a','d']
//删除红色的元素 splice(下标,长度)
var arr = ['a','b','c','d'];
arr.splice(1,1);
console.log(arr);
//['a','c','d'];
var arr2 = ['a','b','c','d']
arr2.splice(1,2);
console.log(arr2);
//['a','d']