Click on the button to bring up the 60-second countdown js code

Little scum · Posted on 1/4/2016 5:11:49 PM

The renderings are as above:

The code is as follows:

The original text is as follows: http://www.cnblogs.com/Nbge/p/3857767.html

There is a bug in the original text, after clicking the button, the countdown will be looped in the future, it may be that the author forgot to add return, and the above code can really run perfectly.

The temperature in the northern city is 22 degrees · Posted on 1/4/2016 5:17:00 PM

Is your countdown real? Invalid after 60s?

Little scum · Posted on 1/4/2016 5:20:22 PM

Beicheng Weaving Temperature 22 degrees Posted on 2016-1-4 17:17
Is your countdown real? Invalid after 60s?

60s is not invalid but regained

If the user does not receive the verification code, he can wait 60 seconds to get it again

1 is to prevent others from maliciously submitting it, and 2 is to prevent users from not receiving verification codes

The temperature in the northern city is 22 degrees · Posted on 1/7/2016 4:29:19 PM

Xiao Zhao Zha Posted on 2016-1-4 17:20
60s is not invalid but regained

If the user does not receive the verification code, he can wait 60 seconds to get it again

I mean, after 60s, is the SMS verification code I received before useful? Is it just 60s that just fails or what?

Little scum · Posted on 1/7/2016 5:17:26 PM

Beicheng Weaving Temperature 22 degrees Posted on 2016-1-7 16:29
I mean, after 60s, is the SMS verification code I received before useful? Is it just 60s that just fails or what?

After 60s, the verification code is still useful 60s just to let users not have to click to get it all the time to prevent malicious clicks on buttons

[JavaScript] Click on the button to bring up the 60-second countdown js code

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