我想知道每次计时器重新开始时如何发送消息.到目前为止,这是我的代码:
Im wanting to know how to put a message in everytime the timer starts over. And here is my code thus far:
<head> <script type="text/javascript"> var c=10; var t; var timer_is_on=0; function timedCount() { document.getElementById('txt').value = c; c = c - 1; if (c == 0) c = 10; } function doMining() { if (!timer_is_on) { timer_is_on = true; t = setInterval(function () { timedCount(); }, 1000); } } </script> <SPAN STYLE="float:left"> <form> <input type="button" value="Mining" onClick="doMining()"> <input type="text" id="txt"> </form> </SPAN>推荐答案
2个简单步骤:
这是一个例子:
<div id='message'></div>然后,访问该元素并使用DOM遍历(最好使用 dojo 或 jquery ,但您也可以手动执行):
Then, access that element and append your message or modify your method using DOM traversal (preferably using a javascript framework such as dojo or jquery but you can also do it manually):
if (c == 0) { var _message = document.createTextNode("Timer has finished!"); document.getElementById('message').appendChild(_message); c = 10; }此外,请勿在表单周围放置 SPAN .尝试使用"div"代替. Span用于对嵌入式文档元素进行样式设置.
Also, don't put a SPAN around a form. Try a "div" instead. Span's are meant for styling in-line document elements.
编辑:我假设当您说重新开始"时,您的意思是c = 0或计时器运行了10次.当它重新开始"时,也可能意味着计时器会重新调用该方法(例如,每1秒钟,在这种情况下,您只需将更新代码放在函数顶部)即可.
I'm assuming when you say "start over" you mean when the c = 0 or the timer has run 10 times. When it "starts over" could also mean when the method is re-called by the timer (i.e. every 1 second, in which case you'd just put the update code at the top of the function)
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