Here's what I want to do:
Check if there is the first character "@" within my string, If not, add it.
Here is my code:
$(document).ready(function(){
$("#twitter").blur(function() {
var s = $("#twitter").val();
alert(s);
var isAt = s.charAt(0);
alert(isAt);
if(isAt !== "@") {
alert("lol");
s = "@" + s;
}
});
});
The Problem:
When I tab to the next input (in turn blurring #twitter) Its lol'ing but not setting the value of the input to "@Rick" when I type "Rick".
Any ideas why?
Change this:
s = "@" + s;
to this:
$("#twitter").val('@' + s);
The problem is that you're updating the value stored in your s
reference, but there's no dynamic binding between that variable and the input field itself (ie, you have to still update the #twitter
value manually).
Edit: as suggested by @epascarello below, this is probably a cleaner solution:
$(document).ready(function(){
$('#twitter').blur(function() {
var $this = $(this),
val = $this.val();
if (val.charAt(0) !== '@') {
$this.val('@' + val);
}
});
});
And... just for the heck of it, another approach:
$(document).ready(function(){
$('#twitter').blur(function() {
if (this.value.charAt(0) === '@') return;
$(this).val(function(i, v) { return '@' + v });
});
});
One more...
$(document).on('blur', '#twitter', function() {
$(this).val(function(i, v) {
return v.replace(/(@)?(.*)/, '@$2')
});
});
Note: you should probably use the first or second one... i'm getting esoteric over here...
$(document).ready(function(){
$("#twitter").blur(function() {
var s = $("#twitter").val();
alert(s);
var isAt = s.charAt(0);
alert(isAt);
if(isAt !== "@") {
alert("lol");
$("#twitter").val("@" + s);
}
});
});
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