时间：2021-07-01 10:21:17 帮助过：35人阅读
- <br><body> <br><a class="disabled">Button disabeld</a> <a class="abled">Button abled</a><br/><br/> <br><input type="button" id="submit" name="submit" value="submit"> <br></body> <br><script type="text/javascript" src="../jquery-1.2.6.js"></script> <br><script type="text/javascript"> <br>$(function(){ <br>//使其失效 <br>$(".disabled").click(function(){ <br>$("#submit").attr("disabled","disabled"); <br>$("#submit").val('disabled...'); <br>}); <br>//激活 <br>$(".abled").click(function(){ <br>$("#submit").removeAttr("disabled"); <br>$("#submit").val('submit'); <br>}); <br>//操作请求 <br>$("#submit").click(function() { <br>$("#submit").attr("disabled", "disabled"); <br>alert("hi");//send ajax request <br>$("#submit").removeAttr("disabled"); <br>}); <br>}); <br></script> <br> <br><strong>说明</strong>：当点击"Button disabeld"后，使用 $( "#submit" ).attr("disabled","disabled") 语句禁用测试按钮，实质是给测试按钮增加一个disabled属性，然后点击"Button abled"或执行发送ajax()请求，当请求完全后，使用 $("#submit").removeAttr("disabled"); 语句去除禁用按钮属性，从而实现了禁用按钮，避免重复发送请求。