javascript - jQuery - Check if a string is larger than 4 characters - Stack Overflow

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I just have a quick question, im wondering if someone could help me.

I have the following script that someone has written which returns an error if there are no characters in the text field.

I want to modify the script so that it returns an error if there are less than 4 characters, but im not quite sure how.

Current script is as follows:

    if(!isString($.trim(iUsername.val()))){ //If username is not correct
        iUsername.siblings('.error').text('You must enter a username.');
        error = true;
    }

I just have a quick question, im wondering if someone could help me.

I have the following script that someone has written which returns an error if there are no characters in the text field.

I want to modify the script so that it returns an error if there are less than 4 characters, but im not quite sure how.

Current script is as follows:

    if(!isString($.trim(iUsername.val()))){ //If username is not correct
        iUsername.siblings('.error').text('You must enter a username.');
        error = true;
    }

• javascript
• jquery
• string
• error-handling

Share Improve this question Follow edited Oct 22, 2011 at 3:55 tekknolagi 11k2626 gold badges7979 silver badges126126 bronze badges asked Oct 22, 2011 at 3:48 BigJobbiesBigJobbies 4,3531212 gold badges4646 silver badges5151 bronze badges 2

• your title and your post body are contradicting; "larger" vs "less" – tekknolagi Commented Oct 22, 2011 at 3:55
• @BigJobbies see jsfiddle/VvD4s – Ray Toal Commented Oct 22, 2011 at 4:13

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1 Answer 1

Sorted by: Reset to default 9

if ($(textId).val().length < 4) { err; }

right? :)

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