Javascript quotation marks and commas [duplicate] - javascript

This question already has answers here:
Are double and single quotes interchangeable in JavaScript?
(23 answers)
Closed 9 years ago.
If there is an difference, if I use " or ' in javascript or html?
Till now I was coding in php and java only and now I don't know, if I can use ' only or do I have to use ".
I know a bit stupid question, but it makes me confuse, since I am used to ' syntex instead of ".

In JavaScript and in HTML, choosing single vs. double quotes is style preference–there is no functional difference like there is in PHP. Commas in JavaScript serve the same purpose as in PHP plus they can be used in expressions.

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what quotes to use in javascript? [duplicate]

This question already has answers here:
Are double and single quotes interchangeable in JavaScript?
(23 answers)
Closed 9 months ago.
I am aware of the differences between "", '', and ``. But, which one is best / standard? My project right now has a mix of all the three but I would like to know, if a good coder was to review my project, which quotes would they wish to see?
You should NEVER use "" or ``. You should always use '', and concatenate strings instead of using ${} with the `. This is the standard. Never use the other two.

Double quotes appearing when single quotes were used [duplicate]

This question already has answers here:
Why JavaScript Compressors replace single quotes with double quotes?
(1 answer)
How does Google Closure Compiler handle quotes (string literals)?
(1 answer)
Closed 3 years ago.
I have the following line of Javascript code:
shell.flash.success('Some string');
However in Chrome Developer Tools this is appearing as:
o.flash.success("Some string")
(nb. o instead of shell because it's minified)
I noticed the same thing in IE.
Why does it display the string with double quotes when single quotes were used?

How to convert PHP Regex to jQuery Regex [duplicate]

This question already has answers here:
Match only unicode letters
(3 answers)
Closed 4 years ago.
I have this PHP regex:
/^[\p{L}\p{M}]+[\p{L}\p{M}\-\s]*$/u
and I want to convert it to jQuery. I tried multiple solutions that I found online, but nothing really worked. I tried using
new RegExp("/^[\p{L}\p{M}]+[\p{L}\p{M}\-\s]*$/u");
but that didn't help.
This is because \p{L} and \p{M} don't exist in the JavaScript RegEx engine. This answer provides solutions for matching Unicode categories: https://stackoverflow.com/a/26659285/1920035

Can someone explain what is meant by `${variable}%` in javascript/react [duplicate]

This question already has answers here:
What does this symbol mean in JavaScript?
(1 answer)
What does this `…${…}…` code in the node docs mean? [duplicate]
(1 answer)
Closed 5 years ago.
I'm a bit of a beginner still and keep coming across this in code:
${Math.round(newProps.percent)}% surrounded by backticks
or
${currentBillingStartDate} surrounded by backticks and not using the percent.
I'd like to understand when it should be used and why.
The percent sign is just a character that is meant to be interpolated with the expression inside the ${variable}. The result would be a string that looks like "55%"

How to do front-end formatting of HTML tags in Javascript? [duplicate]

This question already has answers here:
Unescape HTML entities in JavaScript?
(33 answers)
Closed 9 years ago.
Im working with webservices and javascript... My javascript app pulls down information from the webserivce, but the problem is that some of the information still has the HTML tags in it, for example: ' and & for an apostrophe and ampersand, respectively.
Is there any javascript library, or even third party library, that does the formatting of the HTML tags? Thanks.
you can use this trick
yourtext = $('<div/>').html(yourText).text();

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