執行個體:

說明:要求元素與另一個元素相同
其他
元素的選擇器用于比較目前值
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<code><!doctype html></code>
<code><html></code>
<code><head></code>
<code><meta charset="utf-8"></code>
<code><title>Makes "field" required to be the same as #other</title></code>
<code><link rel="stylesheet" href="https://jqueryvalidation.org/files/demo/site-demos.css"></code>
<code></head></code>
<code><body></code>
<code><form id="myform"></code>
<code><label for="password">Password</label></code>
<code><input id="password" name="password" /></code>
<code><br/></code>
<code><label for="password_again">Again</label></code>
<code><input class="left" id="password_again" name="password_again" /></code>
<code><br></code>
<code><input type="submit" value="Validate!"></code>
<code></form></code>
<code><script src="https://code.jquery.com/jquery-1.11.1.min.js"></script></code>
<code><script src="https://cdn.jsdelivr.net/jquery.validation/1.16.0/jquery.validate.min.js"></script></code>
<code><script src="https://cdn.jsdelivr.net/jquery.validation/1.16.0/additional-methods.min.js"></script></code>
<code><script></code>
<code>// just for the demos, avoids form submit</code>
<code>jQuery.validator.setDefaults({</code>
<code>debug: true,</code>
<code>success: "valid"</code>
<code>});</code>
<code>$( "#myform" ).validate({</code>
<code>rules: {</code>
<code>password: "required",</code>
<code>password_again: {</code>
<code>equalTo: "#password"</code>
<code>}</code>
<code></script></code>
<code></body></code>
<code></html></code>