Concatenate two variables obtained by the getElementByID method

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Concatenate two variables obtained by the getElementByID method

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#1 by (3 votes)

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I have the following problem:

I need to concatenate two objects obtained by the method mentioned above

 var textApellido   = document.getElementById('textApellido');
 var textNombre     = document.getElementById('textNombre'); 
 var resultado = textNombre + textApellido;

Getting the result

Can not read property 'toString' of undefined

javascript

asked by jecorrales 03.11.2017 в 21:29

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1 answer

Why does not this sql query work for me? input type="date" is not recognized in internet explorer 11

score 3 · Accepted Answer

That happens to you because you are capturing the element but not its value, to capture the value you must do the following:

1. If it is a form element

var textApellido   = document.getElementById('textApellido').value;
var textNombre     = document.getElementById('textNombre').value;

2. If it is a div or any other element that is not in form

var textApellido   = document.getElementById('textApellido').innerHTML;
var textNombre     = document.getElementById('textNombre').innerHTML;