Shulou(Shulou.com)06/01 Report--

This article introduces the relevant knowledge of "how AJAX calls ASP files to communicate". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

AJAX ASP instance

When the user types a character in the input field, a function named "showHint ()" is executed.

This function is triggered by the onkeyup event.

Here is the HTML code:

Function showHint (str) {

If (str.length = = 0) {

Document.getElementById ("txtHint") [xss_clean] = ""

Return

} else {

Var xmlhttp = new XMLHttpRequest ()

Xmlhttp.onreadystatechange = function () {

If (this.readyState = = 4 & & this.status = = 200) {

Document.getElementById ("txtHint") [xss_clean] = this.responseText

}

}

Xmlhttp.open ("GET", "gethint.asp?q=" + str, true)

Xmlhttp.send ()

}

}

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