JS implementation after sending SMS verification code Countdown function (Ignore page refresh)

[1]. [Code] This is the Send verification Code button on the page jumps to [1] [2] [3]
<input id= "Second" type= "button" value= "Get Verification Code free"/>
[2]. [Code] JS operation of the cookie jumps to [1] [2] [3]

Add a cookie when sending a verification code
function Addcookie (name,value,expireshours) {
var cookiestring=name+ "=" +escape (value);
Determine if the expiration time is set, 0 is invalid when the browser is closed
if (expireshours>0) {
var date=new date ();
Date.settime (Date.gettime () +expireshours*1000);
cookiestring=cookiestring+ "; expires=" + date.toutcstring ();
}
document.cookie=cookiestring;
}
Modify the value of a cookie
function Editcookie (name,value,expireshours) {
var cookiestring=name+ "=" +escape (value);
if (expireshours>0) {
var date=new date ();
Date.settime (Date.gettime () +expireshours*1000); Unit is milliseconds
cookiestring=cookiestring+ "; expires=" + date.togmtstring ();
}
document.cookie=cookiestring;
}
Get the value of a cookie by name
function Getcookievalue (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 unescape (arr[1]);
Break
}else{
Return "";
Break
}
}

}
[3]. [Code] main logic code jumps to [1] [2] [3]

$ (function () {
$ ("#second"). Click (function () {
Sendcode ($ ("#second"));
});
v = getcookievalue ("secondsremained");//Get Cookie value
if (v>0) {
SetTime ($ ("#second"));//Start Countdown
}
})
Send Verification Code
function Sendcode (obj) {
var phonenum = $ ("#phonenum"). Val ();
var result = Isphonenum ();
if (result) {
Dopostback (' ${base}/login/getcode.htm ', backfunc1,{"Phonenum":p Honenum});
Addcookie ("secondsremained", 60,60);//Add cookie record, effective time 60s
SetTime (obj);//Start Countdown
}
}
Sending a mobile phone using AJAX to the backend text messaging interface
function Dopostback (url,backfunc,queryparam) {
$.ajax ({
Async:false,
Cache:false,
Type: ' POST ',
url:url,//the requested action path
Data:queryparam,
Error:function () {//Request failed handler function
},
Success:backfunc
});
}
function BackFunc1 (data) {
var d = $.parsejson (data);
if (!d.success) {
alert (d.msg);
}else{//Return Verification Code
Alert ("Analog Verification Code:" +d.msg);
$ ("#code"). Val (d.msg);
}
}
Start the countdown.
var countdown;
function SetTime (obj) {
Countdown=getcookievalue ("secondsremained");
if (countdown = = 0) {
Obj.removeattr ("Disabled");
Obj.val ("Free access to Verification code");
Return
} else {
Obj.attr ("Disabled", true);
Obj.val ("Resend (" + Countdown + ")");
countdown--;
Editcookie ("secondsremained", countdown,countdown+1);
}
SetTimeout (function () {settime (obj)},1000)//every 1000 milliseconds
}
Verifying the phone number is legal
function Isphonenum () {
var phonenum = $ ("#phonenum"). Val ();
var Myreg =/^ ((13[0-9]{1}) | ( 15[0-9]{1}) | (18[0-9]{1})) +\D{8}) $/;
if (!myreg.test (Phonenum)) {
Alert (' Please enter a valid mobile number! ‘);
return false;
}else{
return true;
}
}

JS implementation after sending SMS verification code Countdown function (Ignore page refresh)