如何在jquery中将带有数学运算的字符串声明为变量

Question

PHP:

<?php
   $test = "100-12";
?>

jQuery:

var test = <?php echo $test ?>;
alert(test);

in dev tool sources (F12) it looks like this:

var test = 100-12;

but when already alerted / pass the data in other pages or just alerted the value of test becomes 89 which is the value when 100 is subtracted by 12.

i need the as is value which is 100-12 not the subtracted. how do i stop jQuery from subtracting my string.

i tried String() toString() and even "" + but nothing works.

Answer 1

If you want to preserve that (no arithmetic), wrap it with quotes.

So if:

<?php

$test = "101-12"; // if this is the origin value

?>

<script type="text/javascript">
var test = '<?php echo $test; ?>'; // just put quotes in here as well, so that it does not interpolate it as intergers and do arithmentic
alert(test);
</script>