vue-weui-expand/src/components/comm/comm.js

WeUI 的轻量级 js 封装

//优雅字符串拼接
function _Substitute(str, obj) {
    /// <summary>优雅字符串拼接</summary>
    /// <param name="str" type="string">格式字符串:你好{title},你是在{where}？</param>
    /// <param name="obj" type="Object">一个对象：obj = { title: "小陈", where: "中国" };</param>
    if (!(Object.prototype.toString.call(str) === '[object String]')) {
        return '';
    }
    if (!(Object.prototype.toString.call(obj) === '[object Object]' && 'isPrototypeOf' in obj)) {
        return str;
    }
    return str.replace(/\{([^{}]+)\}/g, function (match, key) {
        var value = obj[key];
        return (value !== undefined) ? '' + value : '';
    });
}

///是否闰年
let leap = function isLeapYear(Year) {
    if ((Year % 4 == 0 && Year % 100 != 0) || Year % 400 == 0) {
      return true;
    } else {
      return false;
    }
  };

//年的月份最大天数
let lastDay = function(yerar, month) {
    let e = 0;
    if (
      month == 1 ||
      month == 3 ||
      month == 5 ||
      month == 7 ||
      month == 8 ||
      month == 10 ||
      month == 12
    ) {
      e = 31;
    } else if (leap(yerar) && month == 2) {
      e = 29;
    } else if (month == 2) {
      e = 28;
    } else {
      e = 30;
    }
    return e;
  };

//获取滚动条当前的位置 
function getScrollTop() {
  var scrollTop = 0;
  if(document.documentElement && document.documentElement.scrollTop) {
      scrollTop = document.documentElement.scrollTop;
  } else if(document.body) {
      scrollTop = document.body.scrollTop;
  }
  return scrollTop;
}

//获取当前可视范围的高度 
function getClientHeight() {
    var clientHeight = 0;
    if(document.body.clientHeight && document.documentElement.clientHeight) {
        clientHeight = Math.min(document.body.clientHeight, document.documentElement.clientHeight);
    } else {
        clientHeight = Math.max(document.body.clientHeight, document.documentElement.clientHeight);
    }
    return clientHeight;
}

//获取文档完整的高度 
function getScrollHeight() {
    return Math.max(document.body.scrollHeight, document.documentElement.scrollHeight);
}
  

export {_Substitute,leap,lastDay,getScrollTop,getClientHeight,getScrollHeight}