stored context in a JQuery variable does not work
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by user203687
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Published on 2010-06-18T16:40:30Z
Indexed on
2010/06/18
16:43 UTC
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Hit count: 170
Filed under:
jQuery
|jquery-selectors
The following works fine:
$(function() {
EnableDisableButtons();
$('#TextBox1').keyup(function() {
EnableDisableButtons();
});
});
function EnableDisableButtons() {
var len = $('#TextBox1').val().length;
if (len == 0) {
$("#Button1").attr("disabled", "disabled");
}
else {
$("#Button1").attr("disabled", "");
}
}
But the following does not work at all:
var txt = $('#TextBox1');
$(function() {
EnableDisableButtons();
txt.keyup(function() {
EnableDisableButtons();
});
});
function EnableDisableButtons() {
var len = txt.val().length;
if (len == 0) {
$("#Button1").attr("disabled", "disabled");
}
else {
$("#Button1").attr("disabled", "");
}
}
The error it was throwing was " 'txt.val().length' is null or not an object". Can anyone help me on this.
thanks
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