Document for the Modeless Dialog Box : Dialog « Window Browser « JavaScript DHTML

Document for the Modeless Dialog Box


JavaScript Bible, Fourth Edition
by Danny Goodman 

John Wiley & Sons CopyRight 2001

<TITLE>User Preferences</TITLE>
// Close the dialog
function closeme() {
// Handle click of OK button
function handleOK() {
    var returnFunc = window.dialogArguments
// Handle click of Apply button
function handleApply() {
    var returnFunc = window.dialogArguments
// Handle click of Cancel button
function handleCancel() {
    window.returnValue = ""
// Generic function converts form element name-value pairs
// into an array

function getFormData() {
    var form = document.prefs
    var returnedData = new Array()
    // Harvest values for each type of form element
    for (var i = 0; i < form.elements.length; i++) {
        if (form.elements[i].type == "text") {
            returnedData[form.elements[i].name] = form.elements[i].value
        } else if (form.elements[i].type.indexOf("select") != -1) {
            returnedData[form.elements[i].name] = 
        } else if (form.elements[i].type == "radio") {
            returnedData[form.elements[i].name] = form.elements[i].value
        } else if (form.elements[i].type == "checkbox") {
            returnedData[form.elements[i].name] = form.elements[i].value
        } else continue
    return returnedData
// Initialize by setting form elements from passed data
function init(currPrefs) {
    if (currPrefs) {
        var form = document.prefs
        if (currPrefs["name"]) {
   = currPrefs["name"]
        if (currPrefs["bgColor"]) {
            setSelected(form.bgColor, currPrefs["bgColor"])
        if (currPrefs["textColor"]) {
            setSelected(form.textColor, currPrefs["textColor"])
        if (currPrefs["h1Size"]) {
            setSelected(form.h1Size, currPrefs["h1Size"])
// Utility function to set a SELECT element to one value
function setSelected(select, value) {
    for (var i = 0; i < select.options.length; i++) {
        if (select.options[i].value == value) {
            select.selectedIndex = i
// Utility function to accept a press of the
// Enter key in the text field as a click of OK
function checkEnter() {
    if (window.event.keyCode == 13) {
<BODY BGCOLOR="#eeeeee" onLoad="init()">
<H2>Web Site Preferences</H2>
<FORM NAME="prefs" onSubmit="return false">
<TD>Enter your first name:<INPUT NAME="name" TYPE="text" VALUE="" SIZE=20 onKeyDown="checkEnter()">
<TD>Select a background color:
<SELECT NAME="bgColor">
    <OPTION VALUE="beige">Beige
    <OPTION VALUE="antiquewhite">Antique White
    <OPTION VALUE="goldenrod">Goldenrod
    <OPTION VALUE="lime">Lime
    <OPTION VALUE="powderblue">Powder Blue
    <OPTION VALUE="slategray">Slate Gray
<TD>Select a text color:
<SELECT NAME="textColor">
    <OPTION VALUE="black">Black
    <OPTION VALUE="white">White
    <OPTION VALUE="navy">Navy Blue
    <OPTION VALUE="darkorange">Dark Orange
    <OPTION VALUE="seagreen">Sea Green
    <OPTION VALUE="teal">Teal
<TD>Select "Welcome" heading font point size:
<SELECT NAME="h1Size">
    <OPTION VALUE="12">12
    <OPTION VALUE="14">14

    <OPTION VALUE="24">24
    <OPTION VALUE="32">32
    <OPTION VALUE="48">48
<DIV STYLE="position:absolute; left:120px; top:220px">
<BUTTON STYLE="width:80px" onClick="handleOK()">OK</BUTTON>&nbsp;&nbsp;
<BUTTON STYLE="width:80px" onClick="handleCancel()">Cancel</BUTTON>&nbsp;&nbsp;
<BUTTON STYLE="width:80px" onClick="handleApply()">Apply</BUTTON>


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