js写ping代码(ping 语法)

发布时间:2023-12-08

js写ping代码(ping 语法)

更新:<time datetime="2022-11-08 11:24">2022-11-08 11:24</time>

本文目录一览:

  1. node.js怎么调用ping
  2. 能否使用JavaScript来ping一个IP?
  3. 求一段JS代码,如果本域名主机下“/web/111.html”网页存在,则alert("YES"),否则alert("NO")
  4. 用Javascript调用cmd并执行命令

node.js怎么调用ping

let ping = require('child_process').spawn('ping',['127.0.0.1']);
let iconv = require('iconv-lite');
ping.stdout.on('data', data => {
    let str = iconv.decode(data,'cp936');
    console.log(str);
});
ping.stderr.on('data', data => {
    console.log(data);
});
ping.on('close', code => {
    console.log('Ping 结束');
});

//之前是通过exec 来调用,不过当时没有进行测试,想当然的认为是可以的,抱歉。 //以上引入iconv-lite 是为了解码中文

能否使用JavaScript来ping一个IP?

可以在javascript中ping一个ip地址: 以下是自定义的实现函数:

function Pinger_ping(ip, callback) {
    if(!this.inUse) {
        this.inUse = true;
        this.callback = callback;
        this.ip = ip;
        var _that = this;
        this.img = new Image();
        this.img.onload = function() {_that.good();};
        this.img.onerror = function() {_that.good();};
        this.start = new Date().getTime();
        this.img.src = "http://" + ip;
        this.timer = setTimeout(function() { _that.bad();}, 1500);
    }
}

用法如下: 传入ip和callback参数:比如192.0.8.10 和 mycallBack setTimeout的返回值就可以判断了。

求一段JS代码,如果本域名主机下“/web/111.html”网页存在,则alert("YES"),否则alert("NO")

使用jQuery模拟PING:

$.ping = function(option) {
    var ping, requestTime, responseTime;
    var getUrl = function(url){
        //保证url带http://
        var strReg="^((https|http)?://){1}";
        var re=new RegExp(strReg);
        return re.test(url)?url:"http://"+url;
    }
    $.ajax({
        url: getUrl(option.url)+'/'+ (new Date()).getTime() + '.html',
        type: 'GET',
        dataType: 'html',
        timeout: 10000,
        beforeSend : function() {
            if(option.beforePing) option.beforePing();
            requestTime = new Date().getTime();
        },
        complete : function() {
            responseTime = new Date().getTime();
            ping = Math.abs(requestTime - responseTime);
            if(option.afterPing) option.afterPing(ping);
        }
    });
    if(option.interval && option.interval > 0) {
        var interval = option.interval * 1000;
        setTimeout(function(){$.ping(option)}, interval);
        option.interval = 0;
    }
}

//栗子 HTML

<div id="msg"></div>
$.ping({
    url : '',
    beforePing : function(){$('#msg').html('')},
    afterPing : function(ping){$('#msg').html(ping)},
    interval : 1
});

用Javascript调用cmd并执行命令

建立test.bat文件,存于D:根目录下,作用是将*.txt文件拷贝到d:/test目录下。

md test
copy d:/*.txt d:/test
pause

创建WScript.Shell对象,由该对象直接运行test.dat文件。

var objShell;
objShell = new ActiveXObject("WScript.Shell");
var iReturnCode = objShell.Run("c:/test.bat",0,true);

创建WScript.Shell对象,由该对象直接运行CMD命令。

var objShell;
var objShell = new ActiveXObject("WScript.Shell");
var iReturnCode = objShell.Run("cmd.exe /c md test",0,true);
iReturnCode = objShell.Run("cmd.exe /c copy d:/*.text mytest",0,true);

在js中调用php的代码:

<script language="JavaScript">
function func() {
    if(confirm("Are you OK with this?")) {
        this.location = "ok.php?action=ok";
    } else {
        this.location = "ok.php?action=cancel";
    }
}
</script>
<html>
<head>
</head>
<body>
<a href="#" onClick="javascript:func();">Please Click</a>
</body>
</html>
if($_GET["action"]=="ok") {
    echo "I'm OK!";
} else {
    echo "I'm not OK!";
}