我怎样才能发送“&"?(&符号)字符通过AJAX? [英] How can I send the "&" (ampersand) character via AJAX?

问题描述

我想通过 JavaScript 的 POST 方法发送一些变量和一个字符串.

I want to send a few variables and a string with the POST method from JavaScript.

我从数据库中获取字符串，然后将其发送到 PHP 页面.我正在使用 XMLHttpRequest 对象.

I get the string from the database, and then send it to a PHP page. I am using an XMLHttpRequest object.

问题是字符串多次包含字符&，而PHP中的$_POST数组将其视为多个键.

The problem is that the string contains the character & a few times, and the $_POST array in PHP sees it like multiple keys.

我尝试用 & 替换 & 和 replace() 函数，但它似乎没有做任何事情.

I tried replacing the & with & with the replace() function, but it doesn't seem to do anything.

有人可以帮忙吗?

javascript 代码和字符串如下所示:

var wysiwyg = dijit.byId("wysiwyg").get("value");
var wysiwyg_clean = wysiwyg.replace('&','&');

var poststr = "act=save";

poststr+="&titlu="+frm.value.titlu;
poststr+="&sectiune="+frm.value.sectiune;
poststr+="&wysiwyg="+wysiwyg_clean;
poststr+="&id_text="+frm.value.id_text;

xmlhttp.open("POST","lista_ajax.php",true);
xmlhttp.setRequestHeader("Content-type","application/x-www-form-urlencoded");
xmlhttp.send(poststr);

字符串是:

 <span class="style2">&quot;Busola&quot;</span>

推荐答案

您可以使用 encodeURIComponent().

它将转义所有不能在 URL 中逐字出现的字符:

It will escape all the characters that cannot occur verbatim in URLs:

var wysiwyg_clean = encodeURIComponent(wysiwyg);

在本例中，与号字符 & 将被转义序列 %26 替换，该序列在 URL 中有效.

In this example, the ampersand character & will be replaced by the escape sequence %26, which is valid in URLs.

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