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<button id="aaa" type="button"> 点击</button>
<script type="text/javascript">
postdata=Math.random();
$('#aaa').on('click', function(){
$(document).ready(
function(){
setInterval(function(){
$.ajax({
url:"/test/aaa",
type:"post",
data: postdata
});
}, 5000);
};
);
});
</script>
postdata = Math.random();
var timer;///////
$('#aaa').on('click', function () {
clearInterval(timer)///清除计时器
timer = setInterval(function () {
$.ajax({
url: "/test/aaa",
type: "post",
data: postdata
});
}, 5000);
});