{"id":2120,"date":"2017-08-09T01:08:00","date_gmt":"2017-08-09T01:08:00","guid":{"rendered":"http:\/\/javascript-tutor.net\/?page_id=2120"},"modified":"2018-04-08T02:20:30","modified_gmt":"2018-04-08T02:20:30","slug":"a-selection-box","status":"publish","type":"page","link":"https:\/\/javascript-tutor.net\/index.php\/a-selection-box\/","title":{"rendered":"A Selection Box"},"content":{"rendered":"

You can create a selection box in JavaScript that allows the user to select a certain category of items, in this example, books.<\/p>\n

In this example, we create a function called loadHtml) to load a web\u00a0page from a selection list. As this selection list is situated in a form, we need to add the parameter form in the aforementioned function, loadHtml(form).<\/p>\n

In the script, we use the if keyword to load a particular web page selected by the user. The syntax is<\/p>\n

if (form.list.selectedIndex==n) location=\"abc.html\"<\/pre>\n
*The object list is a selection box and the selectedIndex(n) property indicates the position of the item in the selection box. The location property points to a particular web page.<\/p>\n
The Script<\/h3>\n
<SCRIPT LANGUAGE=\"JavaScript\">\r\n\r\nfunction loadHtml(form){\r\nif (form.list.selectedIndex==0) location=\"art.html\"\r\nif (form.list.selectedIndex==1) location=\"astro.html\"\r\nif (form.list.selectedIndex==2) location=\"bestsell.html\"\r\nif (form.list.selectedIndex==3) location=\"business.html\"\r\nif (form.list.selectedIndex==4) location=\"children.html\"\r\nif (form.list.selectedIndex==5) location=\"computer.html\"\r\nif (form.list.selectedIndex==6) location=\"health.html\"\r\nif (form.list.selectedIndex==7) location=\"mystery.html\"\r\nif (form.list.selectedIndex==8) location=\"horror.html\"\r\nif (form.list.selectedIndex==9) location=\"nonfic.html\"\r\nif (form.list.selectedIndex==10) location=\"romance.html\"\r\nif (form.list.selectedIndex==11) location=\"science.html\"\r\nif (form.list.selectedIndex==12) location=\"scific.html\"\r\nif (form.list.selectedIndex==13) location=\"self.html\"\r\nif (form.list.selectedIndex==14) location=\"sports.html\"\r\nif (form.list.selectedIndex==15) location=\"travel.html\"\r\nif (form.list.selectedIndex==16) location=\"young.html\"\r\nif (form.list.selectedIndex==17) location=\"music.html\"\r\n\r\n}\r\n<\/Script>\r\n<\/pre>\n
We use the Select<\/strong> keyword to create the list box, as follows:<\/p>\n
<SELECT NAME=\"list\" size=\"4\">\r\n<OPTION>Art and Drawing\r\n<OPTION>Astronomy\r\n<OPTION>Best Sellers\r\n<OPTION>Business & Investment\r\n<OPTION>Children Books\r\n<OPTION selected>Computer & Internet\r\n<OPTION>Health & Fitness\r\n<OPTION>Mystery\r\n<OPTION>Horror & Thriller\r\n<OPTION>Non Fiction\r\n<OPTION>Romance\r\n<OPTION>Science & Nature\r\n<OPTION>Science Fiction\r\n<OPTION>Self Improvement\r\n<OPTION>Sports & Games\r\n<OPTION>Travel\r\n<OPTION>Young Readers' Corner\r\n<OPTION>Music\r\n<\/SELECT>\r\n<\/pre>\n
*the size indicates the number of items to be displayed.<\/p>\n
Finally, we need to create a button to allow the user to select an item. The syntax is as follows:<\/p>\n
<Input TYPE=”button” NAME=”button” Value=”OK” onClick=”loadHtml(this.form)”><\/p>\n
View the \u00a0Selection Box<\/a> here.<\/p>\n","protected":false},"excerpt":{"rendered":"
You can create a selection box in JavaScript that allows the user to select a certain category of items, in this example, books. In this example, we create a function called loadHtml) to load a web\u00a0page from a selection list. As this selection list is situated in a form, we need to add the parameter … Continue reading “A Selection Box”<\/span><\/a><\/p>\n","protected":false},"author":35895,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-2120","page","type-page","status-publish","hentry"],"yoast_head":"\nA Selection Box - Learn JavaScript Online | Free Interactive JavaScript Tutorials<\/title>\n<meta name=\"description\" content=\"Creating a selection box in JavaScript\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/javascript-tutor.net\/index.php\/a-selection-box\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A Selection Box - Learn JavaScript Online | Free Interactive JavaScript Tutorials\" \/>\n<meta property=\"og:description\" content=\"Creating a selection box in JavaScript\" \/>\n<meta property=\"og:url\" content=\"https:\/\/javascript-tutor.net\/index.php\/a-selection-box\/\" \/>\n<meta property=\"og:site_name\" content=\"Learn JavaScript Online | Free Interactive JavaScript Tutorials\" \/>\n<meta property=\"article:modified_time\" content=\"2018-04-08T02:20:30+00:00\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/javascript-tutor.net\/index.php\/a-selection-box\/\",\"url\":\"https:\/\/javascript-tutor.net\/index.php\/a-selection-box\/\",\"name\":\"A Selection Box - Learn JavaScript Online | Free Interactive JavaScript Tutorials\",\"isPartOf\":{\"@id\":\"https:\/\/javascript-tutor.net\/#website\"},\"datePublished\":\"2017-08-09T01:08:00+00:00\",\"dateModified\":\"2018-04-08T02:20:30+00:00\",\"description\":\"Creating a selection box in JavaScript\",\"breadcrumb\":{\"@id\":\"https:\/\/javascript-tutor.net\/index.php\/a-selection-box\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/javascript-tutor.net\/index.php\/a-selection-box\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/javascript-tutor.net\/index.php\/a-selection-box\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/javascript-tutor.net\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"A Selection Box\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/javascript-tutor.net\/#website\",\"url\":\"https:\/\/javascript-tutor.net\/\",\"name\":\"Learn JavaScript Online | Free Interactive JavaScript Tutorials\",\"description\":\"Master JavaScript with free, interactive tutorials for beginners and experienced coders. 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