How to use ajax Technology to make online lyrics search function
This article mainly introduces "how to use ajax technology to make online lyrics search function". In daily operation, I believe many people have doubts about how to use ajax technology to make online lyrics search function. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful for you to answer the questions of "how to use ajax technology to make online lyrics search function". Next, please follow the editor to study!
The code is as follows:
Untitled document
Var http_request = false
Function send_request (url) {/ / initialize, specify the handling function, send the request function
Http_request = false
/ / start initializing the XMLHttpRequest object
If (window.XMLHttpRequest) {/ / Mozilla browser
Http_request = new XMLHttpRequest ()
If (http_request.overrideMimeType) {/ / set the MiME category
Http_request.overrideMimeType ('text/xml')
}
}
Else if (window.ActiveXObject) {/ / IE browser
Try {
Http_request = new ActiveXObject ("Msxml2.XMLHTTP")
} catch (e) {
Try {
Http_request = new ActiveXObject ("Microsoft.XMLHTTP")
} catch (e) {}
}
}
If (! http_request) {/ / exception, failed to create object instance
Window.alert ("cannot create XMLHttpRequest object instance.")
Return false
}
Http_request.onreadystatechange = processRequest
/ / determine how to send the request and URL, and whether to execute the next code synchronously
Http_request.open ("GET", url, true)
Http_request.send (null)
}
/ / functions that handle the returned information
Function processRequest () {
If (http_request.readyState = = 4) {/ / determine the status of the object
If (http_request.status = = 200) {/ / the information has been returned successfully. Start processing the information.
/ / alert (http_request.responseText)
Document.getElementById ("result") [xss_clean] = http_request.responseText
} else {/ / Page is not normal
Alert ("there is an exception in the page you requested.")
}
}
}
Function dosearch () {
Var f = document.form1
Var geci = f.geci.value
If (geci== "") {
Window.alert ("Please enter the lyrics you want to query")
F.geci.focus ()
Return false
}
Else {
Document.getElementById ("result") [xss_clean] = "querying, please wait"
Send_request ('http://www.efish.cn/getgeci.aspx?m='+escape(geci));
}
}
Function submitForm () {
If (window.event.keyCode==13) {
Dosearch ()
}
}
One hundred thousand lyrics can be found online for free.
Please enter the song name:
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