lilywang711

Git 比较不同版本文件差异的常用命令格式：

git diff                                       查看尚未暂存的文件更新了哪些部分

git diff filename 查看尚未暂存的某个文件更新了哪些

git diff –cached                    查看已经暂存起来的文件和上次提交的版本之间的差异

git diff –cached filename 查看已经暂存起来的某个文件和上次提交的版本之间的差异

lilywang711

因安全机制，window.open在safari 浏览器中屏蔽掉了, 解决办法如下

let newTab = window.open()
setTimeout(() => {
  newTab = 'https://www.baidu.com'
}, 500)

lilywang711

const gulp = require('gulp')
const sass = require('gulp-sass')
const cssnano = require('gulp-cssnano')
const rename = require('gulp-rename')
const connect = require('gulp-connect')
const babel = require('gulp-babel')
const uglify = require('gulp-uglify-es').default
const imagemin = require('gulp-imagemin')

gulp.task('convertCSS', function () {

lilywang711

//获取指定form中的所有的<input>对象    
function getElements(formId) {    
    var form = document.getElementById(formId);    
    var elements = new Array();    
    var tagElements = form.getElementsByTagName('input');    
    for (var j = 0; j < tagElements.length; j++){  
         elements.push(tagElements[j]);  
  
    }  
    return elements;    

lilywang711

const ajax = (options = {}) => {
  options.method = (options.method || "GET").toUpperCase()
  options.dataType = options.dataType || 'json'
  options.async = options.async || true
  let xhr = null
  if (window.XMLHttpRequest) {
    xhr = new XMLHttpRequest()
  } else {
    xhr = new ActiveXObject('Microsoft.XMLHTTP')
  }

lilywang711

深圳程序员开发群test

lilywang711

var search = location.search.substring(1);
JSON.parse('{"' + decodeURI(search).replace(/"/g, '\\"').replace(/&/g, '","').replace(/=/g,'":"') + '"}')

lilywang711

function time(time = +new Date()) {
    var date = new Date(time + 8 * 3600 * 1000);
    return date.toJSON().substr(0, 19).replace('T', ' ');
}
time(); // "2019-04-18 16:20:22"

lilywang711

export const hasClass = function(obj, cls) {
  return obj.className.match(new RegExp('(\\s|^)' + cls + '(\\s|$)'));
};

export const addClass = function(obj, cls) {
  if (!hasClass(obj, cls)) obj.className += ' ' + cls;
};

export const removeClass = function(obj, cls) {
  if (hasClass(obj, cls)) {

lilywang711

// 获取 url 的查询参数,转为 object
const decodeURI = (url = window.location.search) => {
  return url.replace(/([^?&=]+)=([^&]+)/g,(_,k,v)=>q[k]=v)
}

// 1. 判断两个对象是否严格相等，保证isEqual(NaN, NaN)返回true。
// 2. 与Object.is 的区别在于对+0和-0的比较
function isEqual(a, b) {
  return (a === b || (a !== a && b !== b));
}