i have php variables that is like this
var externalData = '<?php echo $matches[0]; ?>';
I when i load the source code of the page comes like this
var externalData = 'data,data,data,data,data
';
this breaks the javascript code, and browser cant run it.
I want to be like this:
var externalData = 'data,data,data,data,data';
the php output is a full line of a file, so may contains the end of the line. I test it by hand and working, how i can fix this?
You can use trim (or rtrim) to remove the line break at the end of the string:
var externalData = "<?php echo trim($matches[0]); ?>";
Alternatively you could pass the whole string to json_encode:
var externalData = <?php echo json_encode($matches[0]); ?>;
This would not remove the line break, but it would encode it and the resulting value will be a valid JS string literal (i.e. all other characters that could break the code, such as ' or ", will escaped as well).
You can also use substr() to get rid of the last char of string.
Like this:
var externalData = "<?php echo substr($matches[0], 0, strlen($matches[0]) - 1); ?>";
\r\n (windows). Also substr($blah,0,-1) is more elegant.
substr($blah,0,-2) may be OKrtrim is probably the better option.
json_encode(), then parse it client side viaJSON.parse, possibly from a<script type="application/json" id="yourAwesomeId"></script>tag [see this answer].