util.js

"use strict";
var util = util || {};
// cookie 相关函数
util.setCookie = function(name, value, expiredays) {
  var exdate = new Date()
  exdate.setDate(exdate.getDate() + expiredays)
  document.cookie = name + "=" + escape(value) +
    ((expiredays == null) ? "" : ";expires=" + exdate.toGMTString())
}

util.setCookieSecond = function(name, value, second) {
  var exdate = new Date()
  exdate.setSeconds(exdate.getSeconds() + second)
  document.cookie = name + "=" + escape(value) +
    ((second == null) ? "" : ";expires=" + exdate.toGMTString())
}

util.getCookie = function(name) {
  var start, end;
  if (document.cookie.length > 0) {
    start = document.cookie.indexOf(name + "=")
    if (start != -1) {
      start = start + name.length + 1
      end = document.cookie.indexOf(";", start)
      if (end == -1) end = document.cookie.length
      return unescape(document.cookie.substring(start, end))
    }
  }
  return ""
}

// function checkCookie() {
//   var username = getCookie('username');
// }
// cookie 相关函数

// 监控网页错误情况
//接受三个参数,分别是错误信息,错误页面的url和错误行号
window.onerror = function(message, url, linenumber) {
  var devMod = window.devMod || false;
  if (devMod === true) {
    // 表示此前是开发环境
    return;
  }

  console.log("window.onerror", message, url, linenumber);
  if (typeof message === "string") {
    if ((message.search('is not a function') > 0) || (message.search('is not defined') > 0) || (message.search('of undefined') > 0)) {
      // 方法名出错的问题。// 没定义变量就使用的情况 //直接使用没定义变量的情况
      util.reflashPageByError();
    }
  }
}

util.reflashPageByError = function(url) {
  url = url || location.href;
  var time,
    cookiesVal;

  time = parseInt(util.getCookie(url)) || 0;
  time++;
  if (time < 4) {
    // 120 秒以内只能刷新 3 次，120秒之后自动cookies消失，重新能够使用 location.href = location.href;
    util.setCookieSecond(url, time, 120);
    location.href = location.href;
  }
}
// | 监控网页错误情况



// url 参数获取

util.getUrlParam = function(name) {
  var href = transSearch || location.href,
    start,
    end;
  if ( href.length > 0 ) {
    start = href.indexOf(name + "=");
    if (start != -1) {
      start = p_start + name.length + 1;
      end = href.indexOf("&", start);
      if (end == -1) end = href.length;
      return decodeURIComponent(unescape(href.substring(start, end)));
    }
  }
  return ""
}
// |url 参数获取


/**
 * @name buildUrlEscapeParam
 * @desc url 参数化
 * @depend []
 * @param { string } str 网址 href
 **/
util.buildUrlEscapeParam = function(str) {
  str = str || "";
  var newStr = str;
  var oldStr = str;
  var subStr;
  oldStr = oldStr.replace('&', 'ppppppppppppppppppppppp');
  var paramStart = oldStr.indexOf('?');
  if ( oldStr.length > 0 ){
    if( paramStart != -1 ){
      paramStart += 1;
      newStr = oldStr.substring(0, paramStart);
      subStr = oldStr.substring(paramStart);
      newStr += escape(encodeURIComponent(subStr));
      newStr = newStr.replace('ppppppppppppppppppppppp', '&');
    }    
  }
  // 进行优化 query
  newStr.replace('?&', '&').replace(/&+/,'&');
  
  return newStr;
}

/**
 * @name getUrlEscapeParam
 * @desc url 非参数化
 * @depend []
 * @param { string } str 网址 href
 **/
util.getUrlEscapeParam = function(str) {
  return decodeURIComponent( unescape( decodeURIComponent( unescape( str ) ) ) );
}
// 先进行下获取
window.transSearch = util.getUrlEscapeParam( location.search.substring(1) );
( window.devMod === true ) && console.log( transSearch );

// util不进行冲突处理
window.util = window.util || util;