原文链接
https://segmentfault.com/q/1010000010075035
将下列对象中，工资大于1w的员工，增加到对象数组 wansalary中
var baiduusers = [];
var user = function(id, name, phone, age, salary) {
this.id = id;
this.name = name;
this.phone = phone;
this.age = age;
this.salary = salary;
};
user.create = function(id, name, phone, age, salary) {
return new user(id, name, phone, age, salary);
};
baiduusers.push(user.create(1, 'tommy', '1111',18, 10000));
baiduusers.push(user.create(2, 'jerry', '2222',28, 10000));
baiduusers.push(user.create(3, 'raobin','3333',14, 12000));
baiduusers.push(user.create(4, 'binbin','4444',23, 9800));
baiduusers.push(user.create(5, 'arthur','5555',22, 10000));
第一种 循环遍历,注意一下return user的位置；有的同学不小心，总是只新增了一个对象数据
var wansalary = [];
wansalary =myfunction(wansalary);
function myfunction(user){
for (var i = 0; i < baiduusers.length; i ) {
if (baiduusers[i].salary >=10000)
{
wansalary.push(
user.create(
baiduusers[i].id,
baiduusers[i].name,
baiduusers[i].phone,
baiduusers[i].gender,
baiduusers[i].age,
baiduusers[i].salary
)
); } }return user
}
第二种用filter方法
var wansalary2= baiduusers.filter(function(item){
return item.salary>=10000;
})
由用户说第二种有兼容性问题
需要升级为下面代码
array.prototype.filter = array.prototype.filter || function(func) {
var arr = this;
var r = [];
for (var i = 0; i < arr.length; i ) {
if (func(arr[i],i,arr)) {
r.push(arr[i]);
}
}
return r;
}
var arr1 = arr.filter(function(item){
return item.age === 2;
})