ajax-hooks
v1.8.0
Published
Hook Javascript global XMLHttpRequest object。 And change the default AJAX request and response .
Downloads
30
Maintainers
wenduxReadme
Ajax-hook
中文文档:http://www.jianshu.com/p/9b634f1c9615
原理解析:http://www.jianshu.com/p/7337ac624b8e
Introduction
Hook Javascript global XMLHttpRequest object。 And change the default Ajax request and response .
Usage
Installing
Using cdn
<script src="https://unpkg.com/ajax-hook/dist/ajaxhook.min.js"></script>Using npm
npm install ajax-hook
hook the callbacks and functions you want .
hookAjax({ //hook callbacks onreadystatechange:function(xhr){ console.log("onreadystatechange called: %O",xhr) }, onload:function(xhr){ console.log("onload called: %O",xhr) }, //hook function open:function(arg,xhr){ console.log("open called: method:%s,url:%s,async:%s",arg[0],arg[1],arg[2]) } }) // NPM // const ah=require("ajax-hook") // ah.hookAjax({...})
Now, it worked! we use jQuery ajax to test .
// get current page source code
$.get().done(function(d){
console.log(d.substr(0,30)+"...")
})The result :
> open called: method:GET,url:http://localhost:63342/Ajax-hook/demo.html,async:true
> onload called: XMLHttpRequest
> <!DOCTYPE html>
<html>
<head l...See the demo "demo.html" for more details.
API
hookAjax(ob)
- ob; type is Object
- return value: original XMLHttpRequest
unHookAjax()
- unhook Ajax
Changing the default Ajax behavior
The return value type of all hook-functions is boolean, if true, the ajax will be interrupted ,false or undefined are not . for example:
hookAjax({
open:function(arg,xhr){
if(arg[0]=="GET"){
console.log("Request was aborted! method must be post! ")
return true;
}
}
})Changing the "responseText"
hookAjax({
onload:function(xhr){
console.log("onload called: %O",xhr)
xhr.responseText="hook!"+xhr.responseText;
}
})Result:
hook!<!DOCTYPE html>
<html>
<h...Notice
All callbacks such as onreadystatechange、onload and son on, the first argument is current XMLHttpRequest instance. All functions, such as open, send and so on, the first parameter is an array of the original parameters, the second parameter is the current origin XMLHttpRequest instance.