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jquery 判断checkbox是否选中

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Release: 2016-06-01 09:54:48
Original
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第一种方法:
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<code class="language-javascript">if ($("#checkbox-id").get(0).checked) { 
​}</code>
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第二种方法:
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<code class="language-javascript">if($('#checkbox-id').is(':checked')) { 
}</code>
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第三种方法:
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<code class="language-javascript">if ($('#checkbox-id').attr('checked')) {   
​}</code>
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实例:

本实例获取所有checkbox的选中值。

<code class="language-javascript"><input type="checkbox" name="myck" value="php">php
<input type="checkbox" name="myck" value="mysql" checked>mysql
<input type="checkbox" name="myck" value="jquery">jquery
<input type="checkbox" name="myck" value="java">java
<input type="button" id="btn" value="jquery 获取多个checkbox选中项的值">
<script src="/Public/js/jquery-1.7.1.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
    $("#btn").click(function(){
        $('input:checkbox').each(function() { 
            if ($(this).get(0).checked) { 
                alert($(this).val()); 
            } 
       }); 
		
    })
})
</script></code>
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