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: http://www.arcetri.astro.it/irlab/doc/library/javascript/clientreference/submit.htm
Дата изменения: Thu Oct 7 13:13:34 1999 Дата индексирования: Sat Dec 22 14:24:07 2007 Кодировка: Поисковые слова: galaxy cluster |
INPUT
tag, with "submit"
as the value of the TYPE
attribute. For a given form, the JavaScript runtime engine creates an appropriate Submit
object and puts it in the elements
array of the corresponding Form
object. You access a Submit
object by indexing this array. You can index the array either by number or, if supplied, by using the value of the NAME
attribute.
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Submit
object on a form looks as follows:A
Submit
object is a form element and must be defined within a FORM
tag.
Clicking a submit button submits a form to the URL specified by the form's action
property. This action always loads a new page into the client; it may be the same as the current page, if the action so specifies or is not specified.
The submit button's onClick
event handler cannot prevent a form from being submitted; instead, use the form's onSubmit
event handler or use the submit
method instead of a Submit
object. See the examples for the Form
object.
Property |
Description
|
|
|
| |
---|
Method |
Description
|
|
|
| |
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watch
and unwatch
methods from Object
.
Submit
object called submitButton
. The text "Done" is displayed on the face of the button.
<INPUT TYPE="submit" NAME="submitButton" VALUE="Done">See also the examples for the
Form
.
Button
, Form
, Reset
, Form.submit
, onSubmit
blur()
Submit.focus
onClick
event handler. click()
focus()
Submit.blur
form
property that is a reference to the element's parent form. This property is especially useful in event handlers, where you might need to refer to another element on the current form.
button2
, the function showElements
displays an alert dialog box containing the names of each element on the form myForm
.
<SCRIPT>The alert dialog box displays the following text:
function showElements(theForm) {
str = "Form Elements of form " + theForm.name + ": \n "
for (i = 0; i < theForm.length; i++)
str += theForm.elements[i].name + "\n"
alert(str)
}
</SCRIPT>
<FORM NAME="myForm">
Form name:<INPUT TYPE="text" NAME="text1" VALUE="Beluga">
<P>
<INPUT NAME="button1" TYPE="button" VALUE="Show Form Name"
onClick="this.form.text1.value=this.form.name">
<INPUT NAME="button2" TYPE="submit" VALUE="Show Form Elements"
onClick="showElements(this.form)">
</FORM>
Form Elements of form myForm:
text1
button1
button2
Form
handleEvent(event)
event | The name of an event for which the specified object has an event handler. |
name
property initially reflects the value of the NAME
attribute. Changing the name
property overrides this setting.
Do not confuse the name
property with the label displayed on the Submit
button. The value
property specifies the label for this button. The name
property is not displayed on the screen; it is used to refer programmatically to the button.
If multiple objects on the same form have the same NAME
attribute, an array of the given name is created automatically. Each element in the array represents an individual Form
object. Elements are indexed in source order starting at 0. For example, if two Text
elements and a Submit
element on the same form have their NAME
attribute set to "myField"
, an array with the elements myField[0]
, myField[1]
, and myField[2]
is created. You need to be aware of this situation in your code and know whether myField
refers to a single element or to an array of elements.
valueGetter
function uses a for
loop to iterate over the array of elements on the valueTest
form. The msgWindow
window displays the names of all the elements on the form:
newWindow=window.open("http://home.netscape.com")
function valueGetter() {
var msgWindow=window.open("")
for (var i = 0; i < newWindow.document.valueTest.elements.length; i++) {
msgWindow.document.write(newWindow.document.valueTest.elements[i].name + "<BR>")
}
}
Submit.value
Submit
objects, the value of the type
property is "submit"
. This property specifies the form element's type. type
property for every element on a form.
for (var i = 0; i < document.form1.elements.length; i++) {
document.writeln("<BR>type is " + document.form1.elements[i].type)
}
VALUE
attribute.VALUE
attribute is specified in HTML, the value
property is that string and is displayed on the face of the button. When a VALUE
attribute is not specified in HTML, the value
property for the button is the string "Submit Query."
Do not confuse the value
property with the name
property. The name
property is not displayed on the screen; it is used to refer programmatically to the button.
value
property of a group of buttons and displays it in the msgWindow
window:
function valueGetter() {This example displays the following values:
var msgWindow=window.open("")
msgWindow.document.write("submitButton.value is " +
document.valueTest.submitButton.value + "<BR>")
msgWindow.document.write("resetButton.value is " +
document.valueTest.resetButton.value + "<BR>")
msgWindow.document.write("helpButton.value is " +
document.valueTest.helpButton.value + "<BR>")
msgWindow.document.close()
}
Query SubmitThe previous example assumes the buttons have been defined as follows:
Reset
Help
<INPUT TYPE="submit" NAME="submitButton">
<INPUT TYPE="reset" NAME="resetButton">
<INPUT TYPE="button" NAME="helpButton" VALUE="Help">
Submit.name
Last Updated: 05/28/99 12:00:39