count 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 : 4count 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 : 4counter 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;
})
})js increment safety value 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);
}
}Copyright © 2021 Codeinu
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