尝试在 PHP 中 echo JS 函数

发布于 2024-12-18 08:09:17 字数 568 浏览 2 评论 0原文

我正在尝试在 PHP echo 中回显 HTML 字符串中的 js 函数。

我不明白：

$MY_JS_FUNCTION = '<script type="text/javascript">item + getLastField2()</script>';

if($row2->type == 'text') {
    echo "<li id='item-".$row2->rank."' class='list_item'>";
    echo "<textarea rows='2' id='".$row2->single_id."' cols='90' name='field[".$MY_JS_FUNCTION."]' data-kind='text' >".$row2->content."</textarea>";
    echo "</li>";
    echo '<br />';
}

有什么想法可以完成这项工作吗？我想我有很多引言或类似的东西......

任何帮助将非常非常感谢，谢谢！

原文

I'm trying to echo a js function in HTML string inside PHP echo.

And I can't figure it out :

$MY_JS_FUNCTION = '<script type="text/javascript">item + getLastField2()</script>';

if($row2->type == 'text') {
    echo "<li id='item-".$row2->rank."' class='list_item'>";
    echo "<textarea rows='2' id='".$row2->single_id."' cols='90' name='field[".$MY_JS_FUNCTION."]' data-kind='text' >".$row2->content."</textarea>";
    echo "</li>";
    echo '<br />';
}

Any ideas to get this work? I think I have so much quotes in it or something like that...

Any help would be very very appreciated, thanks!

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維他命╮ 2024-12-25 08:09:17

我建议也将名称存储在数据库中。
然后你可以使用 $row2->name 插入正确的名称

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灯下孤影 2024-12-25 08:09:17

您的变量 $MY_JS_FUNCTION 包含一个 HTML

<textarea ... name='field[<script type="text/javascript">item + getLastField2()</script>]' ... >...</textarea>

This isdefinitely not valid HTML。还有你的问题...

Your variable $MY_JS_FUNCTION contains an HTML <script> tag with some (strange) JavaScript code (missing a semi-colon). Based on your code the echo on line 5 results in this HTML:

<textarea ... name='field[<script type="text/javascript">item + getLastField2()</script>]' ... >...</textarea>

This is definitively not valid HTML. And there is your problem...

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櫻之舞 2024-12-25 08:09:17

看来您的意图是回显该 JS，以便在页面加载时，JS 实际上设置该文本区域的名称字段的值。如果是这种情况，一种更简单的方法可能是这样的：

$MY_JS_FUNCTION = '<script type="text/javascript">document.getElementById("myTextArea").name = item + getLastField2()</script>';

if($row2->type == 'text') {
    echo "<li id='item-".$row2->rank."' class='list_item'>";
    echo "<textarea rows='2' id='".$row2->single_id."' cols='90' id='myTextArea' data-kind='text' >".$row2->content."</textarea>";
    echo $MY_JS_FUNCTION;
    echo "</li>";
    echo '<br />';
}

这将生成有效的 HTML。一旦到达该行，JS 函数就会触发，并将“name”值更新为函数的结果。请务必添加“id”字段，以便 JS 知道要定位哪个元素。

It appears your intent is to echo that JS so that when the page loads, the JS actually sets the value of the name field for that textarea. If that's the case, a simpler way might be something like this:

$MY_JS_FUNCTION = '<script type="text/javascript">document.getElementById("myTextArea").name = item + getLastField2()</script>';

if($row2->type == 'text') {
    echo "<li id='item-".$row2->rank."' class='list_item'>";
    echo "<textarea rows='2' id='".$row2->single_id."' cols='90' id='myTextArea' data-kind='text' >".$row2->content."</textarea>";
    echo $MY_JS_FUNCTION;
    echo "</li>";
    echo '<br />';
}

That will produce valid HTML. The JS function will fire once that line is reached and update the "name" value to whatever the result of the function is. Be sure to add the "id" field so that the JS knows which element to target.

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