Select the TextBox value

Question

Select the TextBox value

Navigation

#1 by (-2 votes)

0

Is it possible, when entering a page, to leave the value of a textbox selected, and if the value is wrong, instead of deleting, is it just to enter another value that the previous value is automatically deleted?

asp.net webforms

asked by anonymous 25.08.2015 / 19:52

1 answer

How to create a function to remove unwanted characters, anti injection Run PHP code once [closed]

score -2 · Accepted Answer

I think the simplest solution is to do this via javascript. Take a look at this link: link

Here is an example of what it would look like: link

$.fn.selectRange = function(start, end) {
    var e = document.getElementById($(this).attr('id')); // I don't know why... but $(this) don't want to work today :-/
    if (!e) return;
    else if (e.setSelectionRange) { e.focus(); e.setSelectionRange(start, end); } /* WebKit */ 
    else if (e.createTextRange) { var range = e.createTextRange(); range.collapse(true); range.moveEnd('character', end); range.moveStart('character', start); range.select(); } /* IE */
    else if (e.selectionStart) { e.selectionStart = start; e.selectionEnd = end; }
};

$(function (){
    //aqui a verificação se o seu campo esta valido
    var myTextBoxIsValid = false;
    
    if (!myTextBoxIsValid)
    	$('#MyTextBox').selectRange(0, 10);
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script><inputtype="text" id="MyTextBox" value="teste" />