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NIST Misses 2024 Deadline to Clear NVD Backlog
NIST has failed to meet its self-imposed deadline of clearing the NVD's backlog by the end of the fiscal year. Meanwhile, CVE's awaiting analysis have increased by 33% since June.
前后端通用的函数封装:用于web前端和nodejs端
npm install yu-util --save
const { throttle, listener, intercept, merge, copy, getType, toJSON } = require('yu-util');
//或
import { throttle, listener, intercept, merge, copy, getType, toJSON } from 'yu-util'
throttle(callback,ms)
防抖节流函数,给高频率事件触发设置的节流阀://执行throttle会返回一个闭包函数
let fn = throttle(function () {
console.log(1)
}, 1000)
//执行fn要间隔1000毫秒
//第一次执行fn:
fn(); //打印1
//第二次执行fn:因为和第一次执行的时间没有间隔1000毫秒,所以第二次无效。
fn(); //没有打印
//1、执行fn就是执行throttle的callback
//2、给fn传参数就是给throttle的callback传参数
//3、throttle的callback里的this指向fn的调用者
//比如:
let fn = throttle(function (obj) {
console.log(obj) //打印结果:{ id:1 }
}, 1000)
fn({ id:1 });
listener(obj,attrs,callback)
:对象属性监听//listener(对象, 需要监听的对象属性, 监听函数)
obj = listener({},['id'],(key,val)=>{
console.log(1);
});
o = listener(obj,['id','name'],(key,val)=>{
console.log(2);
});
o.id = 11; //触发两个监听函数,分别打印1,2
o.name = 'xiao'; //触发一个监听函数,打印2
//监听所有属性
obj = listener({},'*',(key,val)=>{
console.log(1);
});
obj.age = 22; //触发监听函数,打印1
intercept(obj,attrs,callback,bool)
:对象属性拦截//intercept(对象, 需要拦截的对象属性, 拦截函数, 是否覆盖之前的拦截函数)
obj = intercept({},['id','name'],(key,val)=>{
//拦截函数
return val+1;
});
obj.id = 2; //给obj的id或name赋值时,触发拦截函数
console.log(obj.id); //3
//拦截所有属性
obj = intercept({},'*',(key,val)=>{
return val+1;
});
obj.age = 11;
console.log(obj.age); //12
//第四个参数:bool 是否覆盖之前的拦截函数
o = intercept(obj,['id'],(key,val)=>{
return val+10;
},true);
//true则会覆盖之前给id设置的拦截函数,false则不能覆盖
o.id = 2;
console.log(o.id) //12
merge(o1,o2,bool)
:两个对象合并let o1 = { id:1,a:{name:'a1',arr:[1,2]},age:22 }
let o2 = { id:2,a:{name:'a2',arr:[2,3],n:11} }
let o = merge(o1,o2);
console.log(o); //{ id:1,a:{name:'a1',arr:[1,2,3],n:11},age:22 }
//覆盖式合并
let o = merge(o1,o2,true);
console.log(o); //{ id:2,a:{name:'a2',arr:[1,2,3],n:11},age:22 }
copy(obj)
:深度复制对象或数组//深度复制对象:
let obj1 = {n:'a',arr:[1,2,{n:'b'}] };
let obj2 = copy(obj1);
console.log(obj1===obj2); //false
console.log(obj1.arr===obj2.arr); //false
console.log(obj1.arr[2]===obj2.arr[2]); //false
//深度复制数组:
let arr1 = [2,{n:'b'},3,[1,4,5,{n:'a',arr:[1,2,3]}]];
let arr2 = copy(arr1);
getType(variate,type)
:获取变量的类型getType([]); //Array
getType({}); //Object
getType(new Date()); //Date
getType(''); //String
getType(11); //Number
getType(null); //Null
getType(undefined); //Undefined
function fn(){}; getType(fn); //Function
function fn(){ return getType(arguments); } fn(); //Arguments
//直接返回判断结果
getType([],'Array'); //true
getType({},'Object'); //true
getType(new Date(),'Date'); //true
getType('','String'); //true
getType(11,'Number'); //true
getType(null,'Null'); //true
getType(undefined,'Undefined'); //true
getType(()=>{},'Function'); //true
each(obj,callback)
:let obj = {a:2,b:8};
each(obj,(key,val)=>{
console.log(key+'-'+val); //a-2 b-8
});
asyncEach(obj,callback,ms)
:let obj = {a:2,b:8};
asyncEach(obj,(key,val)=>{
console.log(key,val);
}, 2000); //每2000毫秒异步执行一次回调函数
let arr = ['b',1,'c',3,'a',2];
let arr1 = Array.bubble(arr)
console.log(arr1) //['a','b','c',1,2,3]
Array.prototype.each(callback)
let arr = ['a','b','c'];
//each函数是深度复制本数组,用这个复制品做循环遍历
arr.each((val,i,array)=>{
arr.shift(); //删除数组的元素,不会影响遍历
console.log(array); //array是arr的深度复制品
})
Array.prototype.asyncEach(callback, ms)
:let arr = [1,2,3,4,5,6];
//asyncEach函数是深度复制本数组,用这个复制品做循环遍历
arr.asyncEach((val,i,array)=>{
arr.shift(); //删除数组的元素,不会影响遍历
console.log(array); //array是arr的深度复制品
}, 2000); //每隔2000毫秒异步执行一次回调函数
toJSON(str)
:将对象字符串转为js对象,如果转换失败则返回原字符串let obj = toJSON('{"name":"xiaoming"}'); //{ name:'xiaoming' }
FAQs
The npm package yu-util receives a total of 5 weekly downloads. As such, yu-util popularity was classified as not popular.
We found that yu-util demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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