646002 - Can't match a pattern correctly on javascript

Status: RESOLVED DUPLICATE of bug 98409

(Firefox :: General, defect)

Description

[Sascha Mevissen]

User-Agent:       Mozilla/5.0 (X11; U; Linux x86_64; de; rv:1.9.2.16) Gecko/20110323 Ubuntu/10.10 (maverick) Firefox/3.6.16
Build Identifier: Mozilla/5.0 (X11; U; Linux x86_64; de; rv:1.9.2.16) Gecko/20110323 Ubuntu/10.10 (maverick) Firefox/3.6.16

I can't do a correctly pattern-match with javascript and Mootools.

Reproducible: Always

Steps to Reproduce:
1.I use the Mootools-framework (1.2.4) for this function.
2.I generate a input-field like this:

<input id='input3' name='passwd' type='' value='' class='required' />
3.Then I add with mootools an patterncheck-function like this:

$('input3').addEvent('keyup', function(){
                var content = this.get('value');
                var pattern = /["'&<>]/g;

                if (pattern.test(content)){
                        this.setStyle('background-color','red');
                } else {
                        this.setStyle('background-color','green');
                }
        });

So if the pattern is true the input-field is colored red, else green.

I've tested this function with Chrome and Opera and it works fine.
With my firefox it doesn't work!
Actual Results:  
Firefox toggles between true and false, or shows not the correct boolean value sometimes.

Expected Results:  
It has to interprete the correct value.

Comment 1

[John P Baker]

The behaviour was changed in Firefox 4 to match other browsers. It should work as required without the g attribute.