yeyuguo

Bar Label Rotation - Apache ECharts Demo

A Pen by dennyferd on CodePen.

License.

yeyuguo

function loadScript(url, callback) {
  try {
    let script = document.createElement("script");
    if (script.readyState) {
      // IE
      script.onreadystatechange = function () {
        if (
          script.readyState === "loaded" ||
          script.readyState === "complete"

yeyuguo

 // 处理文件大小
function handleSize(file, size) {
  const isLimitSize = file.size / 1024 / 1024 < size
  if (!isLimitSize) {
    Message.error(`上传图片大小不能超过${size}M`)
    return false
  }
  return true
}

yeyuguo

/** 不刷新页面， 清除 url 参数 */
function clearAutoParams(name) {
  try {
    // 获取正则结果
    const getRegRes = function(name) {
      var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");
      var result = window.location.search.substr(1).match(reg);
      return result
    }
    const result = getRegRes(name)

yeyuguo

window.addEventListener('scroll', function(){
    // todo 添加距离底部位置
    // const isBottom = getScrollHeight() <= getDocumentTop() + getWindowHeight()
    if(getScrollHeight() == getDocumentTop() + getWindowHeight()){
        //当滚动条到底时,触发内容          
        alert("滑动到的底部");
    }
})

yeyuguo

/** 校验表格 */
export function validForm(formObj, success, error) {
    if (!formObj) return
    formObj.validate(valid => {
        console.log('valid: ', valid);
        if (valid) {
            success && success()
        } else {
            error && error(valid)

yeyuguo

function getUsefulWidthCount({
        containerWidth,
        cardWidth=356, 
        borderWidth=10,
      }={}) {
      if(!containerWidth || containerWidth<=0) return [0, 0]
      let maxCountPer = 0, resultWith = 0

      const addNewCardWidth = () => (maxCountPer + 1) * (cardWidth + borderWidth) - borderWidth
      while(cardWidth>0 && containerWidth>0 && addNewCardWidth() <= containerWidth) {

yeyuguo

// 解决 node 不能接收 try catch 的 promise
if(process) {
  process.on('unhandledRejection', (reason, p) => {
    console.warn('Unhandled Rejection at: Promise', p, 'reason:', reason);
    // application specific logging, throwing an error, or other logic here
  });
}

yeyuguo

function createRandom(start, end) {
  const range = end - start
  return start + Math.round(range * Math.random())
}

function createList(max=100) {
  const getInt = ()=> createRandom(1, max)
  const result = []
  let count = 0
  while(count < max) {

yeyuguo

function parseStrParam(url) {
  const paramsStr = /.+\?(.+)$/.exec(url)[1] // 将 ? 后面的字符串取出来
    const paramsArr = paramsStr.split('&') // 将字符串以 & 分割后存到数组中
    let paramsObj = {}
    // 将 params 存到对象中
    paramsArr.forEach(param => {
        if (/=/.test(param)) { // 处理有 value 的参数
            let [key, val] = param.split('=') // 分割 key 和 value
            val = decodeURIComponent(val) // 解码
            val = /^\d+$/.test(val) ? parseFloat(val) : val // 判断是否转为数字