带有replace（）的jQuery文本（）不会替换文本 [英] jQuery text() with replace() doesn't replace the text

问题描述

我有以下H2：

I have the following H2:

<h2 id="resetPWSuccess">Password reset instructions have been sent to *|RESETPASSWORDEMAIL|*</h2>

我想替换 * | RESETPASSWORDEMAIL | * emailAddress 。

I want to replace the *|RESETPASSWORDEMAIL|* with current email address that I have in the jQuery variable emailAddress.

具有当前的电子邮件地址。无效：

I have tried the following but it doesn't work:

$('h2#resetPWSuccess').text().replace('*|RESETPASSWORDEMAIL|*', emailAddress).show();

有没有办法更新h2文本 - 如果可能，我更喜欢一行。

Is there a way to update the h2 text - I prefer one line if possible.

推荐答案

使用此代替：

Use this instead :

$('#resetPWSuccess').text(
   $('#resetPWSuccess').text().replace('*|RESETPASSWORDEMAIL|*', emailAddress)
).show();

---

请注意，我也删除了 h2 从你的选择器：这是没用的，比只使用id慢。当您要求jQuery搜索 #resetPWSuccess 时，它使用非常快速的本地 getElementById 函数。

---

Note that I also removed the h2 from your selector : it's useless and slower than just using the id. When you ask jQuery to search for #resetPWSuccess, it uses the very fast native getElementById function.

从jQuery的源代码：

From jQuery's source code :

// Shortcuts
if ( (match = rquickExpr.exec( selector )) ) {
    // Speed-up: Sizzle("#ID")
    if ( (m = match[1]) ) {
        if ( nodeType === 9 ) {
            elem = context.getElementById( m );

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