We will send SMS verification codes to our mobile phones when registering an account or participating in activities. This article will reveal how the SMS verification code is implemented, and send text message verification code for every subitem 1 javascript. interested friends can refer to this article to analyze the principle of mobile phone verification code, and then send text message verification code to javascript, the specific ideas are as follows:
After you click "send verification code", the buttons are displayed as "retry after 59 seconds" and "retry after 58 seconds "... It is displayed as "send verification code" after the countdown to 0 seconds ". The button is disabled during the countdown.
Step 1: Get buttons, bind events, set timer variables and timer variables
Step 2: Add a timerThe timer is reduced by 1 every one second until the timer is cleared when the timer is less than or equal to 0. the button is restored to "send verification code"; otherwise, the timer is displayed as "try again after X seconds"
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Implementation code:
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