通用js函数集锦<来源于网络/自己>【一】
1、返回一个全地址2、cookie3、验证用户浏览器是否是微信浏览器4、验证用户浏览器是否是微博内置浏览器5、query string6、验证用户设备来源7、JS验证邮件地址是否合法8、JS获取字符串长度(区分中英文) 中文算2个字,英文一个9、检查手机号码是否合法10、验身份证号码是否正确11、删除cookie12、数组是否包函字符串元素13、后退14、向上滚动到指定位置15、判断是否为身份证16、判断是否为2~15字姓名17、修复IE中 input 的Placeholder文字显示不正常18、元素上方弹出提示19、获取验证码按钮倒数
//返回一个全地址
function resolveUrl(url) {
var a = document.createElement("a");
a.href = url;
return a.href;
}
//*************************************************
//* *
//* cookie *
//* *
//*************************************************
function addcookie(name, value, expireHours) {
var cookieString = name + "=" + escape(value);
//判断是否设置过期时间
expireHours = expireHours || 10000;
var date = new Date();
date.setTime(date.getTime() + expireHours * 3600 * 1000);
cookieString = cookieString + "; expires=" + date.toGMTString() + "; path=/";
document.cookie = cookieString;
}
function getcookie(name) {
var strcookie = document.cookie;
var arrcookie = strcookie.split("; ");
for (var i = 0; i < arrcookie.length; i++) {
var arr = arrcookie[i].split("=");
if (arr[0] == name) return arr[1];
}
return "";
}
/**
* 验证用户浏览器是否是微信浏览器
* @author Terence
*
* @return 是微信浏览器返回true否则返回false
*/
function isWeiXinFun(){var ua = window.navigator.userAgent.toLowerCase();if(ua.match(/MicroMessenger/i) == ‘micromessenger‘){return true;}else{return false;}}
/**
* 验证用户浏览器是否是微博内置浏览器
* @author Terence
*
* @return 是微博内置浏览器返回true否则返回false
*/
function isWeibo(){var ua = window.navigator.userAgent.toLowerCase();if(ua.match(/weibo/i) == ‘weibo‘){return true;}else{return false;}}
//*************************************************
//* *
//* query string *
//* *
//*************************************************
function getQueryStringByName(name) {
var result = this.location.search.match(new RegExp("[\?\&]" + name + "=([^\&]+)", "i"));
if (result == null || result.length < 1) {
return "";
}
return decodeURIComponent(result[1]);
}
/**
* 验证用户设备来源
* @author Terence
*
* @return object
*/
function userAgent()
{
var sUserAgent = navigator.userAgent.toLowerCase();
var o = {};
o.isIpad = /ipad/i.test(sUserAgent);
o.isIphone = /iphone os/i.test(sUserAgent);
o.isUc7 = /rv:1.2.3.4/i.test(sUserAgent);
o.isUc = /ucweb/i.test(sUserAgent);
o.isAndroid = /android/i.test(sUserAgent);
o.isWM = /windows mobile/i.test(sUserAgent);
o.isPhone = o.isIphone || o.isAndroid || o.isWM || o.isUc7 || o.isUc;
o.isMobile = o.isIpad || o.isPhone || o.isAndroid;
o.isPc = !o.isMobile;
o.isIOS = o.isIpad || o.isIphone;
return o;
}
/**
* JS验证邮件地址是否合法
* @author Terence
*
* @param email
* @return 合法返回true；不合法返回false
*/
function checkEmail(email){
var re=/^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/;
return re.test(email);
}
/**
* JS获取字符串长度(区分中英文) 中文算2个字,英文一个
* @author Terence
*
* @param string 电话号码
* @return 返回字符串长度
*/
function getStrLength(str){
var cArr = str.match(/[^\x00-\xff]/ig);
return str.length + (cArr == null ? 0 : cArr.length);
}
/**
* 检查手机号码是否合法
* @author Terence
*
* @param string 手机号码
* @return 合法返回true；不合法返回flase
*/
function checkMobile(string){
return (/^1[3-9]+\d{9}$/.test(string));
}
/**
* 验身份证号码是否正确
* @author Terence
*
* @param num 身份证号码
* @return 合法返回true；不合法返回flase
*/
function isIdCardNo(num){
var factorArr = new Array(7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2,1);
var error;
var varArray = new Array();
var intValue;
var lngProduct = 0;
var intCheckDigit;
var intStrLen = num.length;
var idNumber = num;
// initialize
if ((intStrLen != 15) && (intStrLen != 18)) {
//error = "输入身份证号码长度不对！";
//alert(error);
//frmAddUser.txtIDCard.focus();
return false;
}
// check and set value
for(i=0;i<intStrLen;i++) {
varArray[i] = idNumber.charAt(i);
if ((varArray[i] < ‘0‘ || varArray[i] > ‘9‘) && (i != 17)) {
//error = "错误的身份证号码！.";
//alert(error);
//frmAddUser.txtIDCard.focus();
return false;
} else if (i < 17) {
varArray[i] = varArray[i]*factorArr[i];
}
}
if (intStrLen == 18) {
//check date
var date8 = idNumber.substring(6,14);
if (IsDate(date8) == false) {
//error = "身份证中日期信息不正确！.";
//alert(error);
return false;
}
// calculate the sum of the products
for(i=0;i<17;i++) {
lngProduct = lngProduct + varArray[i];
}
// calculate the check digit
intCheckDigit = 12 - lngProduct % 11;
switch (intCheckDigit) {
case 10:
intCheckDigit = ‘X‘;
break;
case 11:
intCheckDigit = 0;
break;
case 12:
intCheckDigit = 1;
break;
}
// check last digit
if (varArray[17].toUpperCase() != intCheckDigit) {
//error = "身份证效验位错误!正确为： " + intCheckDigit + ".";
//alert(error);
return false;
}
}
else{ //length is 15
//check date
var date6 = "19"+idNumber.substring(6,12);
if (IsDate(date6) == false) {
//alert("身份证日期信息有误！.");
return false;
}
}
//alert ("Correct.");
return true;
}
//删除cookie
function delCookie(name){
var exp = new Date();
exp.setTime(exp.getTime() - 1);
var cval=getcookie(name);
if(cval!=null) document.cookie= name + "="+cval+"; path=/;expires="+exp.toGMTString();
}
//数组是否包函字符串元素
function contains(arr, str) {
var i = arr.length;
while (i--) {
if (arr[i] === str) {
return true;
}
}
return false;
}
/*后退*/
function goback() {
window.history.go(-1);
}
/*向上滚动到指定位置*/
function click_scroll(e) {
var scroll_offset = $(e).offset();
$("body,html").animate({
scrollTop:scroll_offset.top - 10
},0);
}
/*判断是否为身份证*/
function isIdCardNo(num) {
var num = num.toUpperCase(),
len = num.length,
re;
if (!(/(^\d{15}$)|(^\d{17}([0-9]|X)$)/.test(num))) {
return false;
}
else {
if (len == 15) {
re = new RegExp(/^(\d{6})(\d{2})(\d{2})(\d{2})(\d{3})$/);
splitArr = num.match(re);
//检查生日日期是否正确 如19850843 或者 20000843
var dtmBirth = new Date(‘19‘ + splitArr[2] + ‘/‘ + splitArr[3] + ‘/‘ + splitArr[4]);
if (!((dtmBirth.getYear() == Number(splitArr[2])) && ((dtmBirth.getMonth() + 1) == Number(splitArr[3])) && (dtmBirth.getDate() == Number(splitArr[4])))) {
//alert(‘输入的身份证号里出生日期不对！‘);
return false;
}
else {
return true;
}
}
else if (len == 18) {
re = new RegExp(/^(\d{6})(\d{4})(\d{2})(\d{2})(\d{3})([0-9]|X)$/);
var splitArr = num.match(re);
var dtmBirth = new Date(splitArr[2] + "/" + splitArr[3] + "/" + splitArr[4]);
if (!((dtmBirth.getFullYear() == Number(splitArr[2])) && ((dtmBirth.getMonth() + 1) == Number(splitArr[3])) && (dtmBirth.getDate() == Number(splitArr[4])))) {
//alert(‘输入的身份证号里出生日期不对！‘);
return false;
}
//检验18位身份证的校验码是否正确。
//校验位按照ISO 7064:1983.MOD 11-2的规定生成，X可以认为是数字10。
var checkNum;
var arrInt = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
var arrCh = new Array(‘1‘, ‘0‘, ‘X‘, ‘9‘, ‘8‘, ‘7‘, ‘6‘, ‘5‘, ‘4‘, ‘3‘, ‘2‘);
var nTemp = 0, i;
for (i = 0; i < 17; i++) {
nTemp += num.substr(i, 1) * arrInt[i];
}
checkNum = arrCh[nTemp % 11];
if (checkNum != num.substr(17, 1)) {
//alert(‘18位身份证的校验码不正确！应该为：‘ + checkNum);
return false;
}
else {
return true;
}
}
}
}
/*判断是否为2~15字姓名*/
function isChineseName(name) {
reg = /^[\u4E00-\u9FA5]{2,15}$/;
if (!reg.test(name)) {
return false;
} else {
return true;
}
}
/**
* nelson
* 20150810
* 修复IE中 input 的Placeholder文字显示不正常
*/
function fixedIePlaceholder() {
var placeholderfriend = {
focus: function (s) {
s = $(s).hide().prev().show().focus();
var idValue = s.attr("id");
if (idValue) {
s.attr("id", idValue.replace("placeholderfriend", ""));
}
var clsValue = s.attr("class");
if (clsValue) {
s.attr("class", clsValue.replace("placeholderfriend", ""));
}
}
}
//判断是否支持placeholder
function isPlaceholer() {
var input = document.createElement(‘input‘);
return "placeholder" in input;
}
//不支持的代码
if (!isPlaceholer()) {
$(function () {
var form = $(this);
//遍历所有文本框，添加placeholder模拟事件
var elements = form.find("input[type=‘text‘][placeholder]");
elements.each(function () {
var s = $(this);
var pValue = s.attr("placeholder");
var sValue = s.val();
if (pValue) {
if (sValue == ‘‘) {
s.val(pValue);
}
}
});
elements.focus(function () {
var s = $(this);
var pValue = s.attr("placeholder");
var sValue = s.val();
if (sValue && pValue) {
if (sValue == pValue) {
s.val(‘‘);
}
}
});
elements.blur(function () {
var s = $(this);
var pValue = s.attr("placeholder");
var sValue = s.val();
if (!sValue) {
s.val(pValue);
}
});
//遍历所有密码框，添加placeholder模拟事件
var elementsPass = form.find("input[type=‘password‘][placeholder]");
elementsPass.each(function (i) {
var s = $(this);
var pValue = s.attr("placeholder");
var sValue = s.val();
if (pValue) {
if (sValue == ‘‘) {
//DOM不支持type的修改，需要复制密码框属性，生成新的DOM
var html = this.outerHTML || "";
html = html.replace(/\s*type=([‘"])?password\1/gi, " type=text placeholderfriend")
.replace(/\s*(?:value|on[a-z]+|name)(=([‘"])?\S*\1)?/gi, " ")
.replace(/\s*placeholderfriend/, " placeholderfriend value=‘" + pValue
+ "‘ " + "onfocus=‘placeholderfriendfocus(this);‘ ");
var idValue = s.attr("id");
if (idValue) {
s.attr("id", idValue + "placeholderfriend");
}
var clsValue = s.attr("class");
if (clsValue) {
s.attr("class", clsValue + "placeholderfriend");
}
s.hide();
s.after(html);
}
}
});
elementsPass.blur(function () {
var s = $(this);
var sValue = s.val();
if (sValue == ‘‘) {
var idValue = s.attr("id");
if (idValue) {
s.attr("id", idValue + "placeholderfriend");
}
var clsValue = s.attr("class");
if (clsValue) {
s.attr("class", clsValue + "placeholderfriend");
}
s.hide().next().show();
}
});
});
}
window.placeholderfriendfocus = placeholderfriend.focus;
}
/*****元素上方弹出提示，详见css与html
example showTips("btn", ‘请输入手机号码‘, 3);
*******/
function showTips(o, msg, wait) {
em = $(o).parent("li");
if (wait == 0) {
em.find(".tips").hide();
} else {
if(wait == 3)
{
em.find(".tips").remove();
$(‘<div class="tips ui-corner"><p><em>◆</em>‘+msg+‘</p></div>‘).appendTo(em);
$(".tips").css({‘margin-left‘:($(".tips").width()/2) * (-1)});
}
wait--;
setTimeout(function() {
showTips(o, msg, wait)
},
1000);
}
}
/***获取验证码按钮倒数
example timer("btn", 60);
*******/
function timer(o, wait) {
if (wait == 0) {
o.removeAttr("disabled");
o.removeClass("ui-btn-disabled");
o.val("重新发送");
wait = 60;
} else {
o.attr("disabled", true);
o.addClass("ui-btn-disabled");
o.val(" " + wait + "秒 ");
wait--;
setTimeout(function() {
timer(o, wait)
},
1000)
}
}
.ui-form li {
padding: 10px 25px;
height: 30px;
position: relative;
margin: 0 7px;
border-bottom: 1px solid #e2e2e2;
}
.ui-form li .tips {
position: absolute;
top: -33px;
left: 50%;
height: 22px;
line-height: 22px;
padding: 0 10px;
font-size: 11px;
padding: 5px;
color: #FFF;
display: inline-block;
background: #323232;
width: 150px;
text-align: center;
}
.ui-corner {
border-radius: 4px;
-webkit-border-radius: 4px;
-moz-border-radius: 4px;
}
<li><input type="password" name="password" class="ui-input-text ui-corner" id="PASSWORD" onblur="isPassword(this);" placeholder="密码"></li>
时间： 2024-08-28 02:03:02