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HomeWeb Front-endJS Tutorialjquery code to dynamically obtain the number of selected checkboxes_jquery

Today I encountered "jquery dynamically obtains the number of selected checkboxes", first look at the following example:

Copy code The code is as follows:

python

java

jquery

phpddt.com


<script> <BR>$(function(){ <BR>$("input[type='checkbox']").bind("click ",function(){alert($("input[type='checkbox'][checked='checked']").length);}); <BR>}); <BR></script>


I bound a click event to the checkbox and wanted to get the number of selected items. The above method failed to obtain it. When I clicked another checkbox, the number remained unchanged:

jquery动态获取复选框checkbox选中的个数


Copy code The code is as follows:

<script> <BR>$( function(){ <BR>$("input[type='checkbox']").bind("click",function(){alert($("input[type='checkbox']:checked").length );}); <BR>}); <BR></script>
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