The ping function is implemented by pure Javascript, And the ping function is implemented by javascript.

The ping function is implemented by pure Javascript, And the ping function is implemented by javascript.

This example describes how to implement the ping function using pure Javascript. Share it with you for your reference. The specific implementation method is as follows:

function ping(ip) {  var img = new Image();  var start = new Date().getTime();  var flag = false;  var isCloseWifi = true;  var hasFinish = false;  img.onload = function() {    if ( !hasFinish ) {      flag = true;      hasFinish = true;      img.src = 'X:\\';      console.log('Ping ' + ip + ' success. ');    }  };  img.onerror = function() {    if ( !hasFinish ) {      if ( !isCloseWifi ) {        flag = true;        img.src = 'X:\\';        console.log('Ping ' + ip + ' success. ');      } else {        console.log('network is not working!');      }      hasFinish = true;    }  };  setTimeout(function(){    isCloseWifi = false;    console.log('network is working, start ping...');  },2);  img.src = 'http://' + ip + '/' + start;  var timer = setTimeout(function() {    if ( !flag ) {      hasFinish = true;      img.src = 'X://';      flag = false ;      console.log('Ping ' + ip + ' fail. ');    }  }, 1500);}ping('www.google.com:80');

I hope this article will help you design javascript programs.