How to get native information in jquery

In web development, it is often necessary to obtain local machine information, such as obtaining the user's IP address, browser version, operating system and other information. jQuery is one of the most commonly used JavaScript frameworks by web developers, so this article will introduce how to use jQuery to obtain native information.

1. Obtain the IP address

In jQuery, you can use Ajax to send a request to the background and obtain the returned IP address. The specific implementation steps are as follows:

1. Create a PHP file to obtain the client’s IP address. The code is as follows:

<?php 
  $ip = $_SERVER['REMOTE_ADDR']; 
  echo $ip; 
?>

2. Use Ajax in the front-end page to send the request and obtain the returned IP address. The code is as follows:

$.ajax({
  url:"getIP.php", 
  success:function(data){ 
    console.log(data); //输出获取到的IP地址 
  }
});

2. Obtain browser version information

In jQuery, you can use the navigator object to obtain browser version information. The specific implementation steps are as follows:

1. Create a function to obtain browser version information. The code is as follows:

function getBrowserInfo(){
  var ua = navigator.userAgent.toLowerCase(); 
  var browserType = null; 
  var browserVersion = null; 

  //判断浏览器类型 
  if(ua.indexOf("msie") >= 0){ 
    browserType = "IE"; 
    browserVersion = ua.match(/msie ([d.]+)/)[1]; 
  }else if(ua.indexOf("firefox") >= 0){ 
    browserType = "Firefox"; 
    browserVersion = ua.match(/firefox/([d.]+)/)[1]; 
  }else if(ua.indexOf("chrome") >= 0){ 
    browserType = "Chrome"; 
    browserVersion = ua.match(/chrome/([d.]+)/)[1]; 
  }else if(ua.indexOf("opera") >= 0){ 
    browserType = "Opera"; 
    browserVersion = ua.match(/opera/([d.]+)/)[1]; 
  }else if(ua.indexOf("safari") >= 0){ 
    browserType = "Safari"; 
    browserVersion = ua.match(/version/([d.]+)/)[1]; 
  }else{ 
    browserType = "Unknow"; 
  } 

  var browserInfo = {type: browserType, version: browserVersion}; 
  return browserInfo; 
}

2. Call this function where you need to obtain browser version information and output the result. The code is as follows:

var browserInfo = getBrowserInfo(); 
console.log(browserInfo.type + " " + browserInfo.version); 

3. Obtain operating system information

In jQuery, you can use navigator.platform to obtain operating system information. The specific implementation steps are as follows:

1. Create a function to obtain operating system information. The code is as follows:

function getOSInfo(){
  var ua = navigator.userAgent.toLowerCase(); 
  var osType = null; 

  if(ua.indexOf("win") >= 0){ 
    osType = "Windows"; 
  }else if(ua.indexOf("mac") >= 0){ 
    osType = "Mac OS X"; 
  }else if(ua.indexOf("x11") >= 0){ 
    osType = "Unix"; 
  }else if(ua.indexOf("android") >= 0){ 
    osType = "Android"; 
  }else if(ua.indexOf("iphone") >= 0){ 
    osType = "iPhone OS"; 
  }else{ 
    osType = "Unknow"; 
  } 

  return osType; 
}

2. Call this function where you need to obtain operating system information and output the result. The code is as follows:

var osType = getOSInfo(); 
console.log(osType); 

In summary, using jQuery to obtain local information only requires a few JavaScript objects, which is a very useful feature for web developers.

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