如何防止在页面加载时执行javascript函数?

时间:2016-03-13 15:06:08

标签: javascript jquery audio ssh

我有一个本地网页来管理我的路由器上的ssh隧道,我正在尝试对我的ssh隧道进行实时声音通知。当它连接/断开时,它会播放声音。到目前为止它运作良好,但问题是,每次我加载我的网页时都会播放声音,我只希望它在我的ssh连接/断开时发出声音,我不希望它播放声音时即使满足条件(连接/断开连接),我也会加载页面。这是我的剧本:

var count = 0; // variable to prevent my function to play sound every second
function sshNotification() {
    $.ajaxSetup({ cache: false });
    $.ajax({
        type:"get",
        url:"cgi-bin/check", // CGI script to check whether my ssh is connected / disconnected
        success:function(data) {
            if (data.indexOf("192.168.1.1:1080")>-1) {
                if (count == 0) {
                    var audio = new Audio("on.ogg"); // Play a sound when it's connected
                    audio.play();
                    count = 1;
                };
            }
            else {
                if (count == 1) {
                    var audio = new Audio("off.ogg"); // Play a sound when it's disconnected
                    audio.play();
                    count = 0;
                };
            } 
            setTimeout(sshNotification, 1000);
        }
    });
};
sshNotification();

当连接我的ssh时,CGI输出如下所示:

  

192.168.1.1:1080

当我的ssh断开连接时,它什么都不输出。 如何在页面加载时播放声音通知,但仅在我的ssh连接/断开时播放。对不起,如果您认为我的解释有点令人困惑,请随时询问您不理解的部分。感谢。

1 个答案:

答案 0 :(得分:0)

因此,如果您只想检测状态变化:

var count = 0; // variable to prevent my function to play sound every second
var lastState;
function sshNotification() {
    $.ajaxSetup({ cache: false });
    $.ajax({
        type:"get",
        url:"cgi-bin/check", // CGI script to check whether my ssh is connected / disconnected
        success:function(data) {
            if (data.indexOf("192.168.1.1:1080")>-1) {
                if (count == 0) {
                    if(lastState !== 'connected') {
                        var audio = new Audio("on.ogg"); // Play a sound when it's connected
                        audio.play();
                        count = 1;                          
                    }
                    lastState = 'connected';
                };
            }
            else {
                if (count == 1) {
                    if(lastState !== 'not_connected') {
                        var audio = new Audio("off.ogg"); // Play a sound when it's disconnected
                        audio.play();
                        count = 0;                      
                    }
                    lastState = 'not_connected';
                };
            } 
            setTimeout(sshNotification, 1000);
        }
    });
};
sshNotification();