# jquery ajax验证码提交刷新验证码
//更新验证码框
$("#imgcode").click()
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<img style="cursor:pointer" id="imgcode" src="autocode.php" onclick="this.src='autocode.php?aa='+Math.random()"/>
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//下面用来清空验证码输入框内的值
$("#code").attr("value","");
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<input type="text" name="code" id="code" />
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