JavaScript学习笔记整理

function getUrlRelativePath()
　　	{
	　　　　var url = document.location.toString();
		
	　　　　var arrUrl = url.split("//");

	　　　　var start = arrUrl[1].indexOf("/");
	　　　　var relUrl = arrUrl[1].substring(start);//stop省略，截取从start开始到结尾的所有字符

	　　　　if(relUrl.indexOf("?") != -1){
	　　　　　　relUrl = relUrl.split("?")[0];
	　　　　}
	　　　　return relUrl;
　　	}

function GetRequest() {
  var url = location.search; //获取url中"?"符后的字串
  var theRequest = new Object();
  if (url.indexOf("?") != -1) {
    var str = url.substr(1);
    strs = str.split("&");
    for(var i = 0; i < strs.length; i ++) {
      theRequest[strs[i].split("=")[0]] = unescape(strs[i].split("=")[1]);
    }
  }
  return theRequest;
}
var Request = new Object();
Request = GetRequest();

function getQueryString(name) {
  var reg = new RegExp('(^|&)' + name + '=([^&]*)(&|$)', 'i');
  var r = window.location.search.substr(1).match(reg);
  if (r != null) {
    return unescape(r[2]);
  }
  return null;
}
// 这样调用：
alert(GetQueryString("参数名1"));

$("#aa").click(function () {
var date = new Date();
this.year = date.getFullYear();
this.month = date.getMonth() + 1;
this.date = date.getDate();
this.day = new Array("星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六")[date.getDay()];
this.hour = date.getHours() < 10 ? "0" + date.getHours() : date.getHours();
this.minute = date.getMinutes() < 10 ? "0" + date.getMinutes() : date.getMinutes();
this.second = date.getSeconds() < 10 ? "0" + date.getSeconds() : date.getSeconds();
var currentTime = "现在是:" + this.year + "年" + this.month + "月" + this.date + "日 " + this.hour + ":" + this.minute + ":" + this.second + " " + this.day;
alert(currentTime);
});

$.ajax({
	type: "post",
	url: loadurl,
	async: true,
	i:Math.random(),
	success:function(data){
		$("#tra_"+id).html(data);
	}
	beforeSend:function(){
		$("#tra_"+id).html('加载中...');
	}
});

/* 不用if...else，改成哈希字典匹配的方法 */
						//if...else...方法
						/* var itemTypeStr = '';
						if(rowdata.itemType == '1'){
							itemTypeStr = '行政许可';
						}else if(rowdata.itemType == '2'){
							itemTypeStr = '非行政许可';
						} */
						var itemTypeReg = {
								'0':'',
							    '1':'行政许可',
								'2':'非行政许可'
						}
						var itemType = rowdata.itemType;
						//itemType为1~15的数，哈希匹配的方法，例子仅供参考
						itemType = itemTypeReg[itemType];
						return itemType;

 function getStrRealLen(str) {
    ///<summary>获得字符串实际长度，中文2，英文1</summary>
    ///<param name="str">要获得长度的字符串</param>
    var realLength = 0, len = str.length, charCode = -1;
    for (var i = 0; i < len; i++) {
      charCode = str.charCodeAt(i);
      if (charCode >= 0 && charCode <= 128) realLength += 1;
      else realLength += 2;
    }
    return realLength;
  };

/**
  * 监听打开的弹窗，关闭后刷新页面
  */
 function openWin(url,text,winInfo){
 	var winObj = window.open(url,text,winInfo);
 	var loop = setInterval(function() {     
 	    if(winObj.closed) {    
 	        clearInterval(loop);    
 	        //alert('closed');    
 	        parent.location.reload(); 
 	    }    
 	}, 1);   
 }

$('#flowList').datagrid({
				....
				onClickCell:function(rowIndex,field,value){
					    isCheckFlag = false;
					},
					onSelect:function(rowIndex,rowData){
					    if(!isCheckFlag){
					        $(this).datagrid('unselectAll');
					        isCheckFlag = true;
					        $(this).datagrid('selectRow', rowIndex);
					        }
					},
					onUnselect:function(rowIndex,rowData){
					    if(!isCheckFlag) {
					    	isCheckFlag = true;
					    	$(this).datagrid('unselectRow', rowIndex);
					    }
					}
});

var isRadioChecked=$('input:radio[name="surveyResult"]:checked').val();
if(!isRadioChecked){
    $.messager.alert("操作提示","请先选择Radio","info",function(){
    });
    // todo
    return;
}

<meta http-equiv="refresh" content="0; url=https://blog.csdn.net/">

var formatDays2Hours = function (row, column, cellValue) {
  var day = parseInt(cellValue/24);

    var hour = parseInt(cellValue)-parseInt(day*24);

    if(day==0){
        return hour+'小时';
    }else{
        return day+'天'+Math.abs(hour)+'小时';
    }
}