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Why is my loop not working in JavaScript?
for (n = 1; n<4; n++)
{
var my_buttons = "";
my_buttons = my_buttons + `<div class="click" id="color${n}"></div>`;
document.getElementById("clicky").innerHTML = my_buttons;
}
You have two problems:
First you were overwriting my_buttons by declaring it within the loop. Second you were adding that overwritten variable to innerHTML within the loop also, so the content never got saved together.
my_buttons = "";
for (let n = 1; n<4; n++)
{
my_buttons = my_buttons + `<div class="click" id="color${n}"></div>`;
}
document.getElementById("clicky").innerHTML = my_buttons;
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Is this the right way to remove a given character from String?
////not using replace method
function removeChar(str1, s) {
let temp = str1.split('')
let temp2 = []
for (i = 0; i < temp.length; i++) {
if (temp[i] != s) {
temp2.push(temp[i])
}
}
console.log(temp2.join(''));
}
removeChar("Hello","l")
You can do something like this
function removeChar(str1, s) {
return str1.split(s).join('')
}
this is another solution without replace()
const removeChar = (word, letter) => word.split("").filter(v => v !== letter).join("");
Just use the inbuilt replace function of javascript.
newString = oldString.replace(characterToBeReplaced, '');
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I am a beginner in JavaScript and I write the following code, I also write console.log(), and I do not get results, can someone help me and explain to me why I can't get results?
function integers() {
let MyArray;
MyArray = [];
for (let i = 2; i <= 10; i++) {
MyArray.push(i);
}
console.log(MyArray);
}
The javascript functions are not being called automatically. If you need to do so, You can create an auto call function - https://stackoverflow.com/a/10704006/7078456
Or you can manually call your function to get the output of your function.
function integers() {
let myArray = [];
for (let i = 2; i <= 10; i++) {
myArray.push(i);
}
console.log(myArray);
}
integers()
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I have an items array with specific length depending on how many items in an order there are.
I have to calculate the packaging for it, for every 2 items I use the large box and the single item goes in a small box.
So if there are 5 items its 2 large boxes and 1 small box.
How do I do this using the array length? or any other way?
Use the modulo operator:
let numBigBoxes = 0;
let numSmallBoxes = 0;
if (items.length === 1) {
numSmallBoxes = 1;
} else if (items.length % 2 === 0) {
numBigBoxes = items.length / 2;
} else {
numBigBoxes = (items.length - 1) / 2;
numSmallBoxes = 1;
}
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I have that variable. var count_br = "4,7,10"
var count_ = count_br.split(",");
var i;
for (i = 0; i < count_.length; ++i) {
/// Increment here each values of count_br
// I want to get 8,11,14
//for the next loop I want to get 12,15,18
//etc
}
Each time if i > 0 I want to increment by 4 all the values of count_br.
How could i do to increment by 4 all the values .
thanks.
var count_br = "4,7,10";
var count_ = count_br.split(",");
var i;
for (i = 0; i < count_.length; ++i) {
for(let idx in count_) count_[idx] = (parseInt(count_[idx])+4).toString()
}
console.log(count_)
you should take the length of the variable... in this case 4... less 1 is 3 and use it on a for to go trougth all the positions of you array and for each iteration you add 4
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I need to create an array or json that can be filled when detects the counter like an auxiliarJson with variable size but i dont know how can i do it
TypeError: lAttrsPorDia is undefined
lAttrsPorDia[j] = __oATTRS[i];
var lAttrsPorDia;
var j = 0;
for (var i = 0; i < __oATTRS.length; i++) {
if (__oATTRS[i].Dia == counter) {
lAttrsPorDia[j] = __oATTRS[i];
j++;
alert(JSON.stringify(lAttrsPorDia));
}
}
JavaScript arrays already do have variable size:
var arr = [];
arr.push('Hello');