[英]Javascript/AJAX script to check if PHP page outputs 1
I am trying to create an instant messaging site. 我正在尝试创建一个即时消息网站。 Every ten seconds I want a javascript/ajax script to check if there are new messages.
我希望每隔十秒钟使用javascript / ajax脚本检查是否有新消息。 I thought that I could have a php page output 1 if there are.
我以为我可以有一个php页面输出1(如果有)。 I have done the php coding, but can not get the javascript side to work.
我已经完成了php编码,但是无法使javascript端正常工作。 I have tried using $.get and am having a bit of trouble.
我尝试使用$ .get,并且遇到了一些麻烦。 Any help would be greatly appreciated.
任何帮助将不胜感激。
Here is my ajax code: 这是我的ajax代码:
var check;
function checkForMessages() {
$.get("/checkmsg.php", function(data) {
if(data == 1) {
alert("There is a new message");
}
});
}
check = setInterval(checkForMessages, 10000);
My php code always outputs 1 for testing purposes 我的php代码始终输出1进行测试
I'm guessing at the end of your php code you have this: 我猜在您的php代码的末尾有这个:
echo '1';
For your JS i suggest $.post(): 对于您的JS,我建议$ .post():
jQuery.post( '/checkmsg.php', function(data) {
if (data.search('1') !== -1) {
alert("There is a new message");
} else {
alert("Something went wrong.");
}
});
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