Update value using For each event

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Update value using For each event

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#1 by (1 votes)

0

I have this code here:

var current  = 0;
var array1 = [1,2,3,4,5,6,8,9,10];

function aparecer(){
	//verifica se o current é maior do que o array
	if ( (array1.length - 1) < current ) {
		alert("oi");
		//isso deveria parar a função
		return false;
	}
	for (var i= current; i <= (current + 2); i++){
		const lugar = document.getElementById('local');

		const ul    = document.createElement('UL');
		const valor = document.createTextNode(array1[i])
		ul.appendChild(valor);

		lugar.appendChild(ul);

	} 
	current = i;
}

function desaparecer(){
 current = 0;
 document.getElementById('local').innerHTML= '';
  
}

<html>
  <button onClick='aparecer()'> Aparecer </button>
  
  <button onClick='desaparecer()'> Desaparecer </button>
  
  <div id='local'> </div>
  
</html>

And at each click I want to update the value 1,2,3, to 4,5,6, so in succession and not to add on the screen again.

Can anyone help me?

javascript html for

asked by anonymous 19.02.2018 / 21:01

1 answer

Pick up a record as soon as it is saved in the bank Read file from a folder and determine if it is the same as the site [closed]

score 1 · Accepted Answer

Before for , empty div with document.getElementById('local').innerHTML= ''; :

var current  = 0;
var array1 = [1,2,3,4,5,6,8,9,10];

function aparecer(){
	//verifica se o current é maior do que o array
	if ( (array1.length - 1) < current ) {
		alert("oi");
		//isso deveria parar a função
		return false;
	}
       document.getElementById('local').innerHTML= '';
	for (var i= current; i <= (current + 2); i++){
		const lugar = document.getElementById('local');

		const ul    = document.createElement('UL');
		const valor = document.createTextNode(array1[i])
		ul.appendChild(valor);

		lugar.appendChild(ul);

	} 
	current = i;
}

function desaparecer(){
 current = 0;
 document.getElementById('local').innerHTML= '';
  
}

<button onClick='aparecer()'> Aparecer </button>
  
  <button onClick='desaparecer()'> Desaparecer </button>
  
  <div id='local'> </div>