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May 13, 2019 17:34
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Pull down menu, where text of selected element is different than when not selected
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| <meta http-equiv="X-UA-Compatible" content="ie=edge"> | |
| <title>Select test</title> | |
| <style> | |
| #lang-selection { | |
| width: 40px; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <select id="lang-selection" onchange="selectRecorder()"></select> | |
| <script> | |
| const languages = [ | |
| { symbol: "en", fullName: "English" }, | |
| { symbol: "de", fullName: "Deutsch" }, | |
| { symbol: "es", fullName: "Espanol" }, | |
| { symbol: "it", fullName: "Italiano" } | |
| ] | |
| let previouslySelected = 0; | |
| populateLanguageSelect(); | |
| function populateLanguageSelect() { | |
| //fill out select | |
| let options = ""; | |
| for (let i = 0; i < languages.length; i++) { | |
| options += '<option value="' + languages[i].symbol + '">' + languages[i].fullName + '</option>'; | |
| } | |
| let select = document.querySelector("#lang-selection"); | |
| select.innerHTML = options; | |
| //now use symbol for selected language | |
| let selectOptions = document.querySelector("#lang-selection").options; | |
| let selected = document.querySelector("#lang-selection").selectedIndex; | |
| selectOptions[selected].innerText = languages[selected].symbol; | |
| // thisAndPrevSelection.push(selected); | |
| // console.log(thisAndPrevSelection); | |
| } | |
| function selectRecorder() { | |
| let selectOptions = document.querySelector("#lang-selection").options; | |
| let selected = document.querySelector("#lang-selection").selectedIndex; | |
| //symbol for selected | |
| selectOptions[selected].innerText = languages[selected].symbol; | |
| //attribute hidden to selected so it disappears from dropdown | |
| selectOptions[selected].setAttribute("hidden", false); | |
| //full name for previously selected | |
| selectOptions[previouslySelected].innerText = languages[previouslySelected].fullName; | |
| //remove "hidden" attribute from previously selected | |
| selectOptions[previouslySelected].removeAttribute("hidden"); | |
| previouslySelected = selected; | |
| } | |
| </script> | |
| </body> | |
| </html> |
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