thinkphp learn to use-verification code accidentally made a mistake

Look at the code first:

1 $ (". Verify_img"). Click (function() {2         varnew  Date ( ). GetTime (); 3         var url = "{: U (' index/loginverify ')}&t=" +TimeNow; 4         alert (URL); 5         $ (this). attr ("src", url)6     });

The above code causes the verification code click Switch causes the CAPTCHA picture to be unable to display.

Then look at the following code:

$ (". Reloadverify"). Click (function() {     varnew  Date (). GetTime ();         var url = "{: U (' index/loginverify ')}?t=" +TimeNow;       $ ("#image_d"). attr ("src", url)     });

What is the area of the above code? and the difference between &. After comparison, you can see where the problem lies. It is also valid to follow a random number directly after the question mark. var url = "{: U (' index/loginverify ')}?" +math.random ();

It is clear that the problem is here.

thinkphp learn to use-verification code accidentally made a mistake