The jQuery change() is an inbuilt method that is used to detect the change in the value of input fields. This method works only on the “<input>, <textarea> and <select>” elements.
Syntax :
$(selector).change(function)
Parameter: It accepts an optional parameter “function”.
jQuery examples to show the working of change() method:
Example 1: In the below code, no function is passed to the change method.
HTML
<!DOCTYPE html>
< html >
< head >
< script src =
</ script >
< script >
$(document).ready(function () {
$("button").click(function () {
$("input").change();
});
});
</ script >
</ head >
< body >
< p >Click the button to see the changed value !!!</ p >
< button >Click Me!</ button >
< p >Enter value:
< input value = "GeeksforGeeks"
onchange = "alert(this.value)"
type = "text" >
</ p >
</ body >
</ html >
|
Output:

Example 2: In the below code, function is passed to the change method.
HTML
<!DOCTYPE html>
< html >
< head >
< script src =
</ script >
< script >
$(document).ready(function () {
$(".field").change(function () {
$(this).css("background-color", "#7FFF00");
});
});
</ script >
< style >
.field {
padding: 5px;
}
</ style >
</ head >
< body >
Enter Value:
< input class = "field" type = "text" >
< p >
Write something in the input field, and then
press enter or click outside the field.
</ p >
</ body >
</ html >
|
Output:
