如何在 Javascript 中为字符串添加斜杠？

How do I add slashes to a string in Javascript?

提问by TIMEX

Just a string. Add \' to it every time there is a single quote.

只是一个字符串。每次有单引号时都添加 \' 。

回答by Kobi

replaceworks for the first quote, so you need a tiny regular expression:

replace适用于第一个引号，因此您需要一个很小的正则表达式：

str = str.replace(/'/g, "\'");

回答by Somnath Muluk

Following JavaScript function handles ', ", \b, \t, \n, \f or \r equivalent of php function addslashes().

下面的 JavaScript 函数处理 '、"、\b、\t、\n、\f 或 \r 等价于 php 函数 addlashes()。

function addslashes(string) {
    return string.replace(/\/g, '\\').
        replace(/\u0008/g, '\b').
        replace(/\t/g, '\t').
        replace(/\n/g, '\n').
        replace(/\f/g, '\f').
        replace(/\r/g, '\r').
        replace(/'/g, '\\'').
        replace(/"/g, '\"');
}

回答by filip

A string can be escaped comprehensively and compactly using JSON.stringify. It is part of JavaScript as of ECMAScript 5and supported by major newer browser versions.

可以使用 JSON.stringify 全面紧凑地转义字符串。从ECMAScript 5 开始，它是 JavaScript 的一部分，并受到主要的新浏览器版本的支持。

str = JSON.stringify(String(str));
str = str.substring(1, str.length-1);

Using this approach, also special chars as the null byte, unicode characters and line breaks \rand \nare escaped properly in a relatively compact statement.

使用这种方法，还可以将特殊字符作为空字节、unicode 字符和换行符，\r并\n在相对紧凑的语句中正确转义。

回答by Mic

To be sure, you need to not only replace the single quotes, but as well the already escaped ones:

可以肯定的是，您不仅需要替换单引号，还需要替换已经转义的单引号：

"first ' and \' second".replace(/'|\'/g, "\'")

回答by lance

An answer you didn't ask for that may be helpful, if you're doing the replacement in preparation for sending the string into alert() -- or anything else where a single quote character might trip you up.

如果您在准备将字符串发送到 alert() 或其他任何单引号字符可能会绊倒您的地方进行替换，那么您没有要求的答案可能会有所帮助。

str.replace("'",'\x27')

That will replace all single quotes with the hex codefor single quote.

这将用单引号的十六进制代码替换所有单引号。

回答by womp

var myNewString = myOldString.replace(/'/g, "\'");

回答by Vivin Paliath

var str = "This is a single quote: ' and so is this: '";
console.log(str);

var replaced = str.replace(/'/g, "\'");
console.log(replaced);

Gives you:

给你：

This is a single quote: ' and so is this: '
This is a single quote: \' and so is this: \'

回答by Shahadat Hossain Khan

if (!String.prototype.hasOwnProperty('addSlashes')) {
    String.prototype.addSlashes = function() {
        return this.replace(/&/g, '&') /* This MUST be the 1st replacement. */
             .replace(/'/g, ''') /* The 4 other predefined entities, required. */
             .replace(/"/g, '"')
             .replace(/\/g, '\\')
             .replace(/</g, '&lt;')
             .replace(/>/g, '&gt;').replace(/\u0000/g, '\0');
        }
}

Usage: alert(str.addSlashes());

用法：警报（str.addSlashes（））；

ref: https://stackoverflow.com/a/9756789/3584667

参考：https: //stackoverflow.com/a/9756789/3584667