“Contador en JavaScript” Código de respuesta

Contador en JavaScript

## MY HTML
<button id='counter'>Click Me To Count</button>
<span id='result'>1</span>

## MY JAVASCRIPT
let counter = document.getElementById("counter")
let result = document.getElementById("result")
let count = 1

counter.addEventListener("click", () => {
  count += 1
  result.innerHTML = count
})
Nar

contar javascript

const collect = require('collect.js');

const collection = collect([1, 2, 3, 4]);
const x = collection.count();
  
console.log(`Total number of elements are : ${x}`);
// Output: Total number of elements are : 4
Undefined

contrarrestar javascript

//simple counter in javascript 

// this is button element variable
const button = document.querySelectorAll(".btn")

//this variable for display counter number
const h3 = document.querySelector(".counter")
//Count variable
let count = 0;

//foreach method
button.forEach((btn) => {
  //event listener function       
  btn.addEventListener("click", (e) => {
    //event targeting element  
    let target = e.currentTarget

    //condition for counter variable
    if (target.innerText == "reset") {
      count = 0;
    }
    else if (target.innerText == "next") {
      count++;
    }
    else if (target.innerText == "prev") {
      count--;
    }
    //text contains according to the if condition
    h3.innerHTML = count;

  })

})









SkiLL3r

Contador en HTML y JS

<!-- HTML ->
<button id="btn-count">Count</button>
<p id="result"></p>

// JavaScript
const btnCount = document.getElementById('btn-count');

btnCount.addEventListener('click', () => {
  	let counter = 0;
  	counter++;
  	document.getElementById('result').innerText = counter;
});
Whale

JS Valor de seguridad de incremento HTML

function addRow(tableID) {

        var table = document.getElementById(tableID);

        var rowCount = document.getElementById(tableID).getElementsByTagName('tbody')
        [1].getElementsByTagName('tr').length;
        var row = table.insertRow(rowCount +1);

        var cell1 = row.insertCell(0);
        var element1 = document.createElement("input");
        element1.type = "hidden";
        element1.name = "Q[]";
        element1.value = rowCount +1;
        cell2.appendChild(element1);
        cell2.innerHTML = rowCount +1;
}

function deleteRow(tableID) {
        try {
        var table = document.getElementById(tableID);
        var rowCount = table.rows.length;

        for(var i=0; i<rowCount; i++) {
            var row = table.rows[i];
            var chkbox = row.cells[0].childNodes[0];
            if(null != chkbox && true == chkbox.checked) {
                table.deleteRow(i);
                rowCount--;
                i--;
            }


        }
        }catch(e) {
            alert(e);
        }
}
KillberkCoding

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