88 lines
2.5 KiB
TypeScript
88 lines
2.5 KiB
TypeScript
/* eslint-disable @typescript-eslint/no-explicit-any */
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// 深拷贝
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export function deepMerge(...objs: any[]): any {
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const result = Object.create(null)
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objs.forEach((obj) => {
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if (obj) {
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Object.keys(obj).forEach((key) => {
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const val = obj[key]
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if (isPlainObject(val)) {
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// 递归
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if (isPlainObject(result[key])) {
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result[key] = deepMerge(result[key], val)
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} else {
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result[key] = deepMerge(val)
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}
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} else {
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result[key] = val
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}
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})
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}
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})
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return result
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}
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export const isPlainObject = (val: any) =>
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!!val && typeof val === 'object' && val.constructor === Object
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//防抖
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// fn 要执行的函数
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// delay 执行函数
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export const debounce = <T extends (...args: any[]) => ReturnType<T>>(
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callback: T,
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timeout: number
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): ((...args: Parameters<T>) => void) => {
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let timer: ReturnType<typeof setTimeout>
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return (...args: Parameters<T>) => {
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clearTimeout(timer)
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timer = setTimeout(() => {
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callback(...args)
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}, timeout)
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}
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}
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//封装节流
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// fn 要执行的函数
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// delay 执行函数
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export const throttle = <T extends (...args: any[]) => ReturnType<T>>(
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callback: T,
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timeout: number
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): ((...args: Parameters<T>) => void) => {
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let valid = true
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let timer: ReturnType<typeof setTimeout>
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return (...args: Parameters<T>) => {
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if (!valid) {
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return false
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}
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valid = false
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clearTimeout(timer)
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timer = setTimeout(() => {
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callback(...args)
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valid = true
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}, timeout)
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}
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}
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export const exportBlob =(res:any)=>{
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const blob = new Blob([res]); //res为后台返回的文件流，注意参数是以数组的形式上传
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const href = URL.createObjectURL(blob); //URL都要大写，这点也要注意
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const link = document.createElement("a") //生成a标签用于模拟下载
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link.download = "test.xlsx"; //自定义下载文件名称
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link.href = href //把生成的href赋值到a标签上，在这里我遇到一个问题，
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//直接赋值无法把href赋值到a标签的href上（不知道是不是因为封装框架的问题）
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//我采用了原生的方法
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//link.setAttribute("href", href);
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document.body.appendChild(link);
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link.click();
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//释放空间
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document.body.removeChild("link");
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URL.removeObjectURL(href);
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}
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