javascript - Javascript regex Replace doesn't work

Question

I can't, for the life of me, figure out how to replace all [ with < and all ] with > in a value in JavaScript.

Here's what I've tried and it just doesn't work:

function SwitchDialog(NextDialog)
{
    if (NextDialog=='SCHEDULE') {
        $('.popup1').smart_modal_hide();
    } else if (NextDialog=='LICENSEE') {
        gotoLicensee(licenseeLink);
    } else if (NextDialog=='REVIEWCART') {
        window.location = CART_URL;
    } else if (NextDialog=='RFO') {
        window.location = REGISTER_FOR_OTHERS_URL;
    } else {
        if (NextDialog=='PREREG') {
            var msgtxt = gk_text.replace(//[/g, '<');
            msgtxt     = msgtxt.replace(//]/g, '>');
            DialogTemps[NextDialog].msgtext = msgtxt; // error occurs on this line
        }
        RenderDialog(NextDialog);
    }
}

I get a Syntax error: "missing ) after argument list at the ; on the line that assigns the msgtext.

What the heck am I doing wrong?

Answer 1

您需要使用反斜杠 (\)转义表达式中的 [ 和 ] 字符，如下所示：

        var msgtxt = gk_text.replace(/\[/g, '<');
        msgtxt     = msgtxt.replace(/\]/g, '>');

Answer 2

You commented out the closing ), hence the error.

You need to escape a / in a regex, and not a bad idea to escape the [ and ] as well, even though it's likely not needed here.

var msgtxt = gk_text.replace(/\/\[/g, '<');
msgtxt     = msgtxt.replace(/\/\]/g, '>');

Answer 3

您需要转义[和]字符\，因为 then在正则表达式中有特殊含义。

var msgtxt = gk_text.replace(/\[/g, '<').replace(/\]/g, '>');