Vue封装全局过滤器Filters的步骤

// 封装过滤器
// 过滤器的声明可以有下列多种写法

/**
 * Number formatting by unit
 * like 10000 => 10k
 * @param {number} num
 * @param {number} digits
 * @return {string}
 */
function numberFormatter(num, digits) {
 const si = [
  { value: 1e18, symbol: "E" },
  { value: 1e15, symbol: "P" },
  { value: 1e12, symbol: "T" },
  { value: 1e9, symbol: "G" },
  { value: 1e6, symbol: "M" },
  { value: 1e3, symbol: "k" }
 ];
 for (let i = 0; i < si.length; i++) {
  if (num >= si[i].value) {
   return (num / si[i].value + 0.1).toFixed(digits).replace(/\.0+$|(\.[0-9]*[1-9])0+$/, '$1') + si[i].symbol
  }
 }
 return num.toString();
}

/**
 * Number formatting by thousand
 * like 10000 => "10,000"
 * @param {number} num
 * @return {string}
 */
const toThousandFilter = function(num) {
 return (+num || 0).toString().replace(/^-"wenyuan" => "Wenyuan"
 * @param {string} string
 * @return {string}
 */
const uppercaseFirst = string => {
 return string.charAt(0).toUpperCase() + string.slice(1);
};

export default {
 numberFormatter,
 toThousandFilter,
 uppercaseFirst
};

import filters from "./filters"; // global filters

// register global utility filters
Object.keys(filters).forEach(key => {
 Vue.filter(key, filters[key]);
});

<template>
 <div class="home">
  <img alt="Vue logo" src="/UploadFiles/2021-04-02/logo.png">

四、效果

五、可能的报错与注意点
　　在 main.js 中，要先定义过滤器, 再新建 vue 实例，否则会报Failed to resolve filter: xxx的错误。
以上就是Vue封装全局过滤器Filters的步骤的详细内容，更多关于vue封装过滤器的资料请关注其它相关文章！