Add value to existing form field with javascript
Question
i am trying to add the output of the following code (on page load)
<?php the_field('object_id'); ?>
to an field of an form with the id="sf_objekt". The field has an optional set value "ID". The output of the code should replace the "ID".
I tried using "append", but with no luck.
Any ideas? Ty!
2 answers
solution1
0 ACCPTED 2020-06-22 15:24:31
If I have correctly undestood your question, the following snippet should do the trick:
document.querySelector('#sf_objekt').value = "<?php the_field('object_id'); ?>"
<input id="sf_objekt" type="text" />
Clearly the <?php> tag will be replaced with the output of the PHP function the_field() only if the page is ran through a PHP server.
solution2
0 2020-06-22 15:27:19
This code will auto fill in a form with the result of the php script.
<html>
<body>
<form>
<input type="text" id="sf_objekt">
</form>
<script>
document.getElementById("sf_objekt").defaultValue= "<?php echo the_field('object_id'); ?>";
</script>
</body>
</html>
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