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Use javascript to achieve automatic countdown 30 seconds after the button is available

Author: bamboo06 on 17-02-2016, 00:07, views: 4137

5 WEB development are often used to restrict user operations on the countdown form, such as within a certain period of time you want the user to read the relevant protocol information before allowing the user to continue to the next step, another example in the collection of phone verification code allows the user after a certain time (not received the case under the code) to get a verification code again. Well, today I come to tell you how to use javascript to achieve under this simple application.
Use javascript to achieve automatic countdown 30 seconds after the button is available

Category: Javascript