add the style of red font to the content in this string {{}}, and remove {{}}
const a =" Please change these {{content}}, the font to {{red} < / div >"
take a closer look at the variables declared by const can"t be changed, is it wrong? Do you have a good solution
Dec.14,2021
a.replace(/{{([\s\S]*?)}}/g,'<p style="color:red">$1') just replace it with replace
const b = a.replace(/\{\{/g,'<span style="color:red">').replace(/\}\}/g,'</span>') 
then insert b into the page
does not require variables to be changed, it just requires processing string contents
title requires changing the value of the string. All you need to do is replace the string with a regular.
as for the const declaration you want to implement, you can do this
var str="const a = '<div>{{}},{{}}</div>'";
var reg = /\{\{(.*?)\}\}/g;
str = str.replace(reg,'<b style="color:red">'+$1+'</b>');
eval1(str);
function eval1 () {
var script = document.createElement('script');
script.type="text/javascript";
script.text=str;
document.getElementsByTagName('head')[0].appendChild(script);
} a cannot be changed, but you can save it as variable B.
whether it is a constant or a variable, it is meant to be used.
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