JavaScript: A guide to substituting specific characters in a string

I attempted to extract a list of names from a URL as URL parameters.

var url_arrays = [],url_param;
var url = window.location.href.slice(window.location.href.indexOf('?') + 1).split('&');
for (var i = 0; i < url.length; i++)
        {
            url_param = url[i].split('=');
            url_arrays.push(url_param[0]);
            url_arrays[url_param[0]] = url_param[1];
        }
var temp = decodeURIComponent(url_arrays[2]).split(','||' ');

However, the output I am receiving looks like this:

[jon Ned Brian Sam]

Is there a way to remove the opening and closing brackets?

The javascript replace method can be used for replacement, but replacing a set of characters like str.replace('['||']','') isn't possible with it.

javascriptregex

Answer №1

Looks like your regular expression is incorrect.

var str = '[jon Ned Brian Sam]';
str = str.replace(/\[|\]/g, '');
alert(str);

Alternatively,

var str = '[jon Ned Brian Sam]';
str = str.replace('[', '').replace(']', '');
alert(str);

Or,

you could also utilize the substr method.

var str = '[jon Ned Brian Sam]';
str = str.substr(1, str.length - 2);
alert(str);

Answer №2

To eliminate square brackets at the beginning and end of a string, I recommend using the following regular expression:

var text = '[Alice Bob Charlie Dave]';
text = text.replace(/^\[|\]$/g, '');
document.write(text);

The use of ^ (for the start of the string) and $ (for the end of the string) ensures that only the brackets at the beginning and end are removed from the input.

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