Fortunately I found the solution in a forum where people are more disposed to help newbie like me. If I was a guru coder, I will probably not need to ask help. <script type=”text/javascript”> function removeIt(){ var sel=document.getElementsByName(‘repeat_period’)[0]; sel.options.remove(0); } removeIt(); </script> http://jsfiddle.net/YgPw4/ solved Modify item order in select field with javascript [closed]
var myArray = [“id1”, “id2”, “id3”]; var container = document.getElementById(‘container’); myArray.forEach(function(id){ container.innerHTML = container.innerHTML + “<a href=\””+id+”\”>”+id+”</a>” }); http://jsfiddle.net/suwJr/ solved Simple JavaScript append array link ids to html doc? [closed]
Use if statements and apply different styles or classes. CSS .hidden { display: none; } HTML & JavaScript <div id=”A” class=”” onclick=”handlePress(‘A’);”>A</div> <div id=”B” class=”hidden” onclick=”handlePress(‘B’);”>B</div> <div id=”C” class=”hidden” onclick=”handlePress(‘C’);”>C</div> <div id=”D” class=”hidden” onclick=”handlePress(‘D’);”>D</div> <script type=”text/javascript”> const letters = [‘A’, ‘B’, ‘C’, ‘D’]; function handlePress(id) { document.getElementById(id).classList.remove(‘hidden’); letters.forEach((letter) => { if (letter !== id) { … Read more
Assuming that you just want decimal integers in regular form (e.g., 1000 would be valid, 1e3 [the same number in scientific notation] would not), the regular expression to validate that is \d+, which means “one or more digit(s).” To have your regular expression allow that, you’d want an alternation, which lets either of two alternatives … Read more
You could use DOMParser to convert the string to a document, after which you could querySelectorAll over it to find the elements with translate attributes: const str = `<p translate=”index_word1″ > </p> <strong translate=”index_word2″></strong>`; new DOMParser() .parseFromString(str, ‘text/html’) .querySelectorAll(‘[translate]’) .forEach(element => console.log(element.getAttribute(‘translate’))); 1 solved Fetch a string between a static pattern in HTML [closed]
Do you want something like this? const biscuitsPerCat = (cats, biscuits) => { const share = Math.floor(biscuits / cats.length) const cutoff = biscuits – cats.length * share return cats.reduce((res, cat, idx) => ({…res, [cat]: idx < cutoff ? share + 1 : share}), {}) } console.log(biscuitsPerCat([“Andy”, “Bandy”, “Candy”, “Dandy”], 14)) … which you could then … Read more
Thanks a lot for all your comments and advice. I’ve got the answer now, and here it is: let inputArray = []; snapshot.forEach(snap => { inputArray.push(snap.val()); return false; }); solved Firebase: getting value of a child without knowing its key
Make sure the div exists before trying to reference it, window.addEventListener(“load”,function() { document.getElementById(‘text’).innerHTML = localStorage.getItem(“mytext”); },false); That will wait for the document to load before doing any modifications 1 solved Whats wrong here, why is innerHTML not working? [closed]
Use objects for the grouping. var categories = {}; function incrementBy(category, value) { if (!categories[category]) { categories[category] = 0; } categories[category] += value; } var datasetarr = []; var pos; for(var i = 0; i < arr.length; i++){ console.log(‘unsorted ‘ + arr[i].type + ‘ ‘ + arr[i].quantity); incrementBy(arr[i].type, arr[i].quantity) } for(var category in categories){ console.log(‘sorted … Read more
You have to call send(null) on the xmlhttp-Object. Just add xmlhttp.send(null); This will actually send the request. 0 solved Ajax code doesn’t works in IE
A possible solution is to use do…while. This code will keep display alert(‘invalid number of grades, please insert again’) and window.prompt until it meets you condition. Then it will window.prompt for user to enter the number. const grades = []; let gradeAmount = Number(prompt(‘insert a number between 1 and 5’)); do{ if(gradeAmount < 1 || … Read more
This are the most used techniques: target element using .index() and .eq() <div id=”clickables”> <div>CLICK 1</div> <div>CLICK 2</div> </div> <div id=”togglables”> <div>text 1</div> <div>text 2</div> </div> $(function(){ $(“#clickables div”).click(function(){ var idx = $(this).index(); $(‘#togglables div’).eq( idx ).slideToggle(); }); }); Pros: you can keep a really clean HTML markup, no need to assign additional classes or … Read more
This is the closest you could get with the use of Selectable() provided by JQuery. I have provided a demonstration below: $(function() { $(“#selectable”).selectable(); }); #feedback { font-size: 1.4em; } #selectable .ui-selecting { background: #FECA40; } #selectable .ui-selected { background: #F39814; color: white; } #selectable { margin: 0; padding: 0; width: 60%; display:inline; } #selectable … Read more
you forgot a ) $(function () { $(‘.submit’).on(‘click’, function () { … }) // <— }); if you properly indent the code blocks and if you look on the javascript console, this kind of errors become easier to be detected. Just adopt an indent style and write code adhering to it. 2 solved Javascript not … Read more
You can split the list by a comma delimiter and validate each individual element. $.each(enteredData.split(“,”), function(i, str){ var esnList = +str; /* enter validation here */ }); 2 solved How can I make jQuery to check multiple values?