如何在 PHP 代码中引入 JavaScript 警报窗口
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How to introduce JavaScript alert window inside PHP code
提问by Klausos Klausos
I need to introduce JavaScript alert function show_alert()inside PHP code. How this can be done?
我需要show_alert()在 PHP 代码中引入 JavaScript 警报功能。如何做到这一点？
script type="text/javascript">
function show_alert() {
var msg = "No solution found.";
alert(msg);
}
</script>
<?php
//...
$outputs = -1;
if ($outputs == -1) {
echo '<script type="text/javascript"> show_alert(); </script>';
} else {
?>
<table width="100%">
<tr>
<td width="100%">
<div class="scrollbar" id="chart">
<img src="ganttchart.php">
</div>
</td>
</tr>
</table>
<?php
}
?>
回答by Ignacio Vazquez-Abrams
In-line JavaScript needs to be inside <script>tags. Simply output those as well, in a valid place. Do note that you cannot affect the operation of the PHP code this way though.
内嵌 JavaScript 需要在<script>标签内。只需将它们也输出到有效位置即可。请注意，您不能以这种方式影响 PHP 代码的操作。
回答by alexpja
Try this, it echos the show_alert(); in PHP:
试试这个，它呼应了 show_alert(); 在 PHP 中：
<script type="text/javascript">
function show_alert() {
var msg = "No solution found";
alert(msg);
}
</script>
<?php
//...
$output = run_function();
if ($output == -1) {
echo '<script type="text/javascript"> show_alert(); </script>';
}
?>
回答by aurel
use this
用这个
<script type="text/javascript">
show_alert();
</script>
so like this
像这样
$output = run_function();
if ($outputs == -1) {
?>
<script type="text/javascript">
show_alert();
</script>
<?php
}
?>
回答by Johntor
I would suggest
我会建议
$msg = "My message";
echo "<script type=\"text/javascript\"> alert($msg); </script>";
You are right about it David
你说得对，大卫
回答by comu
<?php
$output = run_function();
if ($outputs == -1) {
echo "<script type='text/javascript'>alert("No Solution Found");</script>"
}
?>
