Js实现手机发送验证码时按钮延迟操作

实例代码记录：
<script type="text/javascript">function start_sms_button（obj）{var count = 1 ;var sum = 30;var i = setInterval（function（）{if（count > 10）{obj.attr（"disabled",false）;obj.val（"发送验证码"）;clearInterval（i）;}else{obj.val（"剩余"+parseInt（sum - count）+"秒"）;}count++;},1000）;} $（function（）{//发送验证码$（"#send_sms"）.click（function（）{var phone_obj = $（"input[name="phone"]"）;var send_obj = $（"input#send_sms"）;var val = phone_obj.val（）;if（val）{if（IsMobile（val））{send_obj.attr（"disabled","disabled"）;//30秒后重新启动发送按钮start_sms_button（send_obj）;$.ajax（{url:"{#url_reset（"index/sms"）#}",data:{"mobile":val},dataType:"json",type:"post",beforeSend:function（）{show_loading_body（）;},complete:function（）{show_loading_body（）;},success:function（data）{if（data.status！=undefined && （data.status == "ok" || data.status == "error"））{showMsg（data.msg）;}}}）;}else{showMsg（"手机号的格式错误"）;}}else{showMsg（"手机号不能为空"）;}}）;}）;</script>