各種常用的JS函數整理_基礎知識-js教程-PHP中文網

各種常用的JS函數整理_基礎知識

WBOY

發布： 2016-05-16 17:18:47

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Js取得頁面位址參數

 
function getUrlPparaName) >{ 
var sUrl = location.href; 
var sReg = "(?://?|&){1}" paraName "=([^&]*)" 
var re = new RegExp(sReg, "gi"); 
re.exec(sUrl); 
return RegExp.$1; 
} 

 

地址跳轉

複製程式碼程式碼如下:

var pn = $("#gotopagenum").val();//#gotopagenum是文字方塊的id屬性
location.href = "NewList.aspx?pagenum=" pn;//location.href實作客戶端頁面的跳躍

千分位

複製程式碼程式碼如下:

function Convert(money) 
{ 
 money; //取得小數型資料
s = ""; 
if (s.indexOf(".") == -1) s = ".00"; //如果沒有小數點，後面補個小數點和00 
if (/.d$/.test(s)) s = "0"; //正規判斷
while (/d{4}(.|,)/.test(s )) //符合條件則進行替換
s = s.replace(/(d)(d{3}(.|,))/, "$1,$2"); //每隔3位加一個
return s; 
} 

 

判斷是否數字

複製代碼代碼如下:

function IsNumeric(txt) { 
if (txt == "") { 
return false; 
} 

if (txt.indexOf( ",") > 0) { 
txt = txt.replace(",", ""); 
} 

if (isNaN(txt)) { 
return false; 
} 
else { 
return true; 
} 
} 

 

將數字進行兩位小數的格式化

將數字進行兩位小數的格式化複製程式碼

 程式碼如下:

 
function changeTwoDecimal_f(x) { 
var f_x = parseFloat(if); isNaN(f_x)) { 
alert('function:changeTwoDecimal->parameter error'); 
return false; 
} 
f_x = Math.round(f_x * 100) / 1000) var s_x = f_x.toString(); 
var pos_decimal = s_x.indexOf('.'); 
if (pos_decimal pos_decimal = s_x.length; 
s_>pos_decimal = s_x.length; 
s_>d .'; 
} 
while (s_x.length s_x = '0'; 
} 
return s_x; 
} 

}
return s_x;
}
}
return s_x;

} } return s_x; } } return s_x; }

Js 進行數字運算的函數parseFloat parseInt 

js 當前日期yyyy-mm-dd 預置查詢條件

複製程式碼

複製程式碼

複製程式碼

複製程式碼

複製碼🎜> 程式碼如下:

var now = new Date();

var year = now.getYear(); 

if (now.getYear() year = now.getYear() 1900; 
} 

var month = now.getMonth() 1; 
var day = now.getDate(); >
if (month if (day 
$("#txtDate1").val(year .toString() "-" month.toString() "-01"); 
$("#txtDate2").val(year.toString() "-" month.toString() "-" day.toString ()); 

Js 取得時間戳，在某些情境下取代Guid 

複製程式碼

複製程式碼

複製碼

 程式碼如下:

function NowTimeCode() 
{ 
var Result=""; 

var now = new Date(); 

 var year = now.getYear();

if (now.getYear() year = now.getYear() 1900; } var month = now.getMonth() 1; var day = now.getDate(); var hour = now.getHours(); var minutes = now.getMinutes(); var second = now.getSeconds(); var millisecond = now.getMilliseconds(); if (month if (day if (hour if (minutes if (second if (millisecond millisecond = "00" millisecond; else { if (millisecond { 0" millisecond; } } Result = year.toString() month.toString() day.toString() hour.toString() minutes.toString() second.toString() millisecond.toString(); return Result; }