Passing an input parameter in JS showing Unexpected end of input

Question

I am trying to pull a string variable into my javascript function from a PHP file and am being returned: Uncaught SyntaxError: Unexpected end of input.

I have tried to use onclick="showContent('home')" but this does not load the page at all. I assumed that placing home in parentheses would act as a string parameter and fill that variable in the javascript function.

In my header.php: echo "<img src='../images/home.png' onclick='showContent('home')' alt='Home' /></a>";

In my menu.js:

function showContent(showThis){ alert(showThis); }

Possible duplicate of ["Notice: Undefined variable", "Notice: Undefined index", and "Notice: Undefined offset" using PHP](https://stackoverflow.com/questions/4261133/notice-undefined-variable-notice-undefined-index-and-notice-undefined) — aynber, Oct 15 '19 at 19:19
Double-check where you have `$home` defined, it's not able to use the variable. — aynber, Oct 15 '19 at 19:29
@PatrickQ No, it still does. The header.php file is where the html is being generated from. — Frank Doe, Oct 15 '19 at 20:00
New possible dupe: https://stackoverflow.com/questions/35792954/how-to-pass-string-in-onclick-function-html — Patrick Q, Oct 15 '19 at 20:10

score 0 · Answer 1 · answered Oct 15 '19 at 19:27

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Try like this:

echo "<img src='../images/home.png' onclick='showContent(\"$home\")' alt='Home' />";

answered Oct 15 '19 at 19:27

kaczmen

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This shows up as empty. And when I click view source code it appears like this in the final HTML: `onclick='showContent("")'` – Frank Doe Oct 15 '19 at 19:29
@FrankDoe Then `$home` is empty. You should include (in your question) the code that is supposed to be assigning a value to `$home` – Patrick Q Oct 15 '19 at 19:31
Updated my question. My apologies. – Frank Doe Oct 15 '19 at 19:52

score 0 · Answer 2 · answered Oct 15 '19 at 19:31

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Try this. You are not interpolating the variable $home correctly into the JS.

echo "<img src=\"../images/home.png\" onclick=\"showContent('{$home}')\" alt=\"Home\" />";

answered Oct 15 '19 at 19:31

MD.Tabish Mahfuz

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Passing an input parameter in JS showing Unexpected end of input

2 Answers2