自定义 jquery 或 javascript 从字符串扩展名中删除特殊字符

Question

I would like to be able to do this:

var test = "A3%2345-S63.][343\g30.1.0.45";
test.removeSpecialCharacters();

all special characters ie (%,*, (,[..etc) will be removed);

or

test.removeSpecialCharacters("-");

meaning all special characters will be replaced with "-"

I've tried with this but i don't think i'm doing it right :(

jQuery.fn.removeSpecialCharacters = function (optional replaceWith) {
    this.replace(/[^a-z0-9\s]/gi, '');
}

Answer 1

There is absolutely no reason to use jQuery for this. Adding the function to jQuery.fn would make it a method usable on jQuery objects. However, you want it for strings. They are instances of String so you need to extend String.prototype instead:

String.prototype.removeSpecialChars = function(replaceWith) {
    return this.replace(/[^a-z0-9\s]/gi, replaceWith || '');
}