JQuery

2018-05-04

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JQuery
2018-05-07

JQuery

The $(document).ready() method allows us to execute a function when the document is fully loaded.
$(selector).action()
all property names must be camel-cased when used with the animate() method _{ex: paddingLeft instead of padding-left, marginRight instead of margin-right.}
A callback function is executed after the current effect is finished. _{ex:$(selector).hide(speed,callback);}
The callback function has two parameters: the index of the current element in the list of elements selected and the original (old) attribute value.

append()

<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script>
function appendText() {
    var txt1 = "<p>Text.</p>";              // Create text with HTML
    var txt2 = $("<p></p>").text("Text.");  // Create text with jQuery
    var txt3 = document.createElement("p");
    txt3.innerHTML = "Text.";               // Create text with DOM
    $("body").append(txt1, txt2, txt3);     // Append new elements
}
</script>
</head>
<body>

<p>This is a paragraph.</p>
<button onclick="appendText()">Append text</button>

</body>
</html>

The filter() method lets you specify a criteria.
the load() method's the callback function can have different parameters:
_{responseTxt - contains the resulting content if the call succeeds}
_{statusTxt - contains the status of the call}

_{xhr - contains the XMLHttpRequest object}

<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
    $("button").click(function(){
        $("#div1").load("demo_test.txt", function(responseTxt, statusTxt, xhr){
            if(statusTxt == "success")
                alert("External content loaded successfully!");
            if(statusTxt == "error")
                alert("Error: " + xhr.status + ": " + xhr.statusText);
        });
    });
});
</script>
</head>
<body>

<div id="div1"><h2>Let jQuery AJAX Change This Text</h2></div>

<button>Get External Content</button>

</body>
</html>

$.get(URL,callback);

<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
    $("button").click(function(){
        $.get("demo_test.asp", function(data, status){
            alert("Data: " + data + "\nStatus: " + status);
        });
    });
});
</script>
</head>
<body>

<button>Send an HTTP GET request to a page and get the result back</button>

</body>
</html>

$.post(URL,data,callback);

<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
    $("button").click(function(){
        $.post("demo_test_post.asp",
        {
          name: "Donald Duck",
          city: "Duckburg"
        },
        function(data,status){
            alert("Data: " + data + "\nStatus: " + status);
        });
    });
});
</script>
</head>
<body>

<button>Send an HTTP POST request to a page and get the result back</button>

</body>
</html>


//////////////("demo_test_post.asp")////////////////////////
<!-- <%
dim fname,city
fname=Request.Form("name")
city=Request.Form("city")
Response.Write("Dear " & fname & ". ")
Response.Write("Hope you live well in " & city & ".")
%>-->

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