A method instance for refreshing or partially refreshing a. NET authentication code _ Practical Tips

Taking the refresh of the verification code as an example

Copy Code code as follows:

<form method= "POST" name= "Login" action= "" >
Verification code: <input type= "text" name= "code" class= "text code"/>

</form>

method One: Using the pseudo-class implementation of Javascrip

Copy Code code as follows:

method Two: the introduction of external files

Introducing an external file between the

Copy Code code as follows:

<script type= "Text/javascript" src= "Js/code.js" ></script>

External file code.js set Local refresh function

function code () {
var code = document.getelementbyidx_x_x (' code ');
Code.onclick = function () {
This.src= ' code.php?tm= ' +math.random ();
};
};

In addition, if you want to add a content next to the verification code, and then click the Content Verification code refresh, you can use the following methods

Copy Code code as follows:

<form method= "POST" name= "Login" action= "" >
Verification code: <input type= "text" name= "code" class= "text code"/>

<span id= "Update" > click Refresh Verification Code </span>

</form>

method One: Using the pseudo-class implementation of Javascrip

Copy Code code as follows:

<span id= "Update" onclick= "javascript:code.src= ' code.php?tm= ' +Math.random" ( ) "></span>

Method Two: The introduction of external files

Introducing an external file between the

Copy Code code as follows:

<script type= "Text/javascript" src= "Js/code.js" ></script>

External file code.js set Local refresh function

function code () {
var code = document.getelementbyidx_x_x (' code ');

var update = document.getelementbyidx_x_x (' Update ');
Update.onclick = function () {
Code.src= ' code.php?tm= ' +math.random ();
};
};