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源代码：
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<!doctype html> <html> <head> <meta charset="utf-8"> <title>Makes "field" required to be the same as #other</title> <link rel="stylesheet" href="https://jqueryvalidation.org/files/demo/site-demos.css"> </head> <body> <form id="myform"> <label for="password">Password</label> <input id="password" name="password" /> <br/> <label for="password_again">Again</label> <input class="left" id="password_again" name="password_again" /> <br> <input type="submit" value="Validate!"> </form> <script src="https://code.jquery.com/jquery-1.11.1.min.js"></script> <script src="https://jqueryvalidation.org/files/dist/jquery.validate.min.js"></script> <script src="https://jqueryvalidation.org/files/dist/additional-methods.min.js"></script> <script> // just for the demos, avoids form submit jQuery.validator.setDefaults({ debug: true, success: "valid" }); $( "#myform" ).validate({ rules: { password: "required", password_again: { equalTo: "#password" } } }); </script> </body> </html>
运行结果