what is geofence alert

1) What is geofence? According to Wikipedia, geofence (also called geo-fencing),"Geo-fenceIs a virtual perimeter for a real-world geographic area ." A geo-fence cocould be dynamically generated-as in a radius around a store or point location. or a geo-fence can be a predefined set of boundaries, like school attenda

| | Value to the right of the number.After the above test is not difficult to find, the above code only see | | The value on the left of the number, if the left value is false, take the right value (whatever the right value is); The value to the left of the number is true? Take a look at the following tests:Alert (2|

Tags: server start start RTU tab tables ERP error creatEach database has a Alert_A database alert file is a log file that lists messages in chronological order, such as: Any non-default initialization parameters used at startup All internal errors (ORA-600), block corruption errors (ORA-1578), deadlock errors (ORA-60) that have occurred Administrative operations, such as SQL statements create, A

Because I do not know how to describe this problem, so the title up so pit dad The main process is this, today I write a similar to Baidu know that there are questions to answer the page, all the data is the first time the page is loaded through Ajax The desired effect is that the questioner can choose to adopt this

PHP why my Ajax return value is 1 why does the foreground receive the HTML code of the exact entire page page that the alert (data) displays (I used the Smarty also returns the value of the page in the Smarty template) Reply to discussion (solution) Add exit after PHP output 1; Or not! Ask for guidance That's what you do with Ajax requests.Usual

Overview Functions are the basis for modular program design. To compile complex Ajax applications, you must have a deeper understanding of functions. Functions in JavaScript are different from other languages. Each function is maintained and run as an object. Through the properties of function objects, you can easily assign a function to a variable or pass the function as a parameter. Before proceeding, let's take a look at the usage syntax of the fun

XMLHttpRequest. open (); what is the difference between the first parameter post and get? When to select and what is the difference between other parameters? Get and post are two methods for sending requests from clients in HTML to the server. They can also be called two methods for transmitting data between pages,

Ajax is asynchronous JavaScript and XML. AJAX enables Web pages to be updated asynchronously by exchanging small amounts of data in the background with the server. This means that you can update a part of a webpage without reloading the entire page.Interactive process:The start gets XMLHttpRequest object2--open Open the URL channel and set the asynchronous transfer3--send sending data to the server4--server accepts data and processes, returns results

#Parent.location.hash=self.location.hash;IE, chrome security mechanism can not modify parent.location.hash, to take advantage of an intermediary cnblogs domain proxy iframe4,window.nameName is a property of a global/window object in the browser environment, and the property value of name remains unchanged when a new page is loaded in the frame.By loading a resource in the IFRAME, the target page sets the Na

What is the Taskmgr.exe process? Askmgr.exe is used for Windows Task Manager. It displays the processes that are running on the system. The program uses Ctrl+alt+del to open, which is not a pure system program, but it can cause an unknown problem if it is terminated. In Mi

Ajax is asynchronous JavaScript and XML. AJAX enables Web pages to be updated asynchronously by exchanging small amounts of data in the background with the server. This means that you can update a part of a webpage without reloading the entire page.Interactive process:The start gets XMLHttpRequest object2--open Open the URL channel and set the asynchronous transfer3--send sending data to the server4--server accepts data and processes, returns results

Node is a server-side JavaScript interpreter that will change the concept of how the server should work. Its goal is to help programmers build highly scalable applications and write connection codes that handle tens of thousands of simultaneous connections to one (only one) physical machine. Brief introduction If you've ever heard of node, or read some articles about how awesome node

validation mechanism for UAC How to turn off UAC:http://www.duote.com/tech/8/21192.html What is the difference between security levels: Protect Win7 security have to say UAC, as we all know, UAC is the acronym for User Account Control, which is translated as a new technology that

, it will pass an independent function to avoid having to write more and forget which function it is. Implementation of JavaScript closure: As mentioned in the beginning, the closure implementation in JavaScript is inseparable from the Scope Chain in JavaScript. first, there will always be an Execute Context Stack in JavaScript Execution (think about it when the JavaScript interpreter sees an

the function name itself is a variable. For function declarations and function expressions as shown below, it is very useful to understand that a function in JavaScript cannot be overloaded without considering the difference between a function declaration and a function expression.1 function f (a) {2 return a + 3} 4 5 function f (a) {6 return a-10; 7} 8 9//without considering the difference betwe

This article mainly introduces what is Node. js? What are the advantages of Node. js ?, To try to explain what Node is. js, this article will briefly introduce some background information: the problem to be solved, how it works, how to run a simple application, and finally,

JSON is a string used to transfer data, involving how to turn JS into a JSON string: stringify () converts a JSON string into a js:parse () and a eval_r () difference between the parse and eval: eval: Can parse any string into JS (will also parse the embedded Trojan) Parse: Only parse the JSON form of the string into JS and attributes in the string are strictly quoted (security is higher)Eval: How to conver

..., functionbody) [New function ("X", "Y", "return (x + y)/2")] To define the function, and then the F as a parameter in the function of the continuous transfer; But I generally do not let this function generate closures for delivery, but will pass a separate function to avoid writing more than they have forgotten which. Implementation of JavaScript closures: As it begins, the closure implementation in JavaScript is inseparable from the Scope Ch

); you can continuously pass a as a Function parameter, or you can var f = new Function (arg1, arg2 ...., functionBody) [new Function ("x", "y", "return (x + y)/2")] to define the Function, then, f is continuously transmitted as a parameter in the function. However, I generally do not allow this function to generate a closure for transmission, instead, it will pass an independent function to avoid having to write more and forget which function it

return this function, the ECMA said that this function object is not a value like a reference type, so its base object is null, Its value is implicitly converted to a global object, and then the value of this is determined with this base object. However, this value is undef