Shulou(Shulou.com)06/03 Report--

This article mainly introduces how to use Ajax to verify user names, with certain reference value, interested friends can refer to, I hope you have a lot of gains after reading this article, let Xiaobian take you to understand.

The code to validate the username with Ajax looks like this:

Interface:

getguestbook/index.phpm : indexa : verifyUserNameusername : username to verify

return

{code: returned message code 0 = no error, 1 = error message : returned message specific returned message}

js

oUsername1.onblur = function() { //When losing focus, give the current username to the backend to verify Ajax ('get ', ' guestbook/index.php','m=index&a=verifyUserName&username ='+ this.value, function(data) {//alert(data); browser debug view var d = JSON.parse(data); //parse oVerifyUserNameMsg[xss_clean] = d.message;//return information to the page if (d.code) { //code : returned message code 0 = no error, 1 = error oVerifyUserNameMsg.style.color ='red '; //error message plus red} else {oVerifyUserNameMsg.style.color ='green'; //correct message plus green});} Thank you for reading this article carefully, I hope Xiaobian shared "How to use Ajax to verify user name" This article is helpful to everyone, but also hope that everyone will support more, pay attention to industry information channels, more relevant knowledge waiting for you to learn!

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