javascriptjqueryselection-api

TypeError: text.value is undefined

Hi I'm trying to get selected value of a input when input is focused with tab. This is my code,

HTML,

<input id='texteb' type="text" value=''/>
<button>
  click
</button>

JS

$(function(){
    $(window).on('keyup', function (e) {
    var focused = $(':focus');

    if (e.which === 9){
            var text = focused;
            var t = text.value.substring(text.selectionStart, text.selectionEnd - text.selectionStart);
            alert(t);
    }        
  });
});

But I'm getting this error,

TypeError: text.value is undefined

This is Jsfiddle for it.

With answers this issue can be solved with .val() but selectionStart seems to be giving undef

Solution

  • I looked over you fiddle an changed line 6: jsfiddle - modified

    //var text = focused;
var text = focused[0];

    The reason you were getting undefined was that you were grabbing a jQuery object (i.e. "focused") that doesn't have those properties (value, selectionStart etc.). However, what you really needed was the javascript object, which is available using focused[0].

    For more methods, check this: How do I pull a native DOM element from a jQuery object? (from: https://learn.jquery.com/)

    (ps. I wonder what you are doing with this code?)