Find comma in quotes with regex and replace with HTML equiv

问题

I'm looking in a string such as:

"Hello, Tim"

Land of the free, and home of the brave

And I need it to become:

"Hello&#44; Tim"

Land of the free, and home of the brave

This I thought was simple, but for the life of me I can't figure it out. Im importing a corrupt CSV with 1000s of entries via AJAX, so I just need to convert commas INSIDE of double quotes.

How would I go about do this with JavaScript? I can't figure it out. I tried

回答1:

var str = '"Hello, Tim"\n\
\n\
Land of the free, and home of the brave';

str
.split('"')
.map(function(v,i){ return i%2===0 ? v : v.replace(',','&#44;'); })
.join('"');

Check MDC for an implementation of map() for non-supporting browsers.

回答2:

It is probably easier with a callback function to replace:

s = s.replace(/"[^"]*"/g, function(g0){return g0.replace(/,/g,'&#44;');});

At the first step we find all quotes, and replace just the commas in them.

You can even allow escaping quotes:

CSV style (with two double quotes) - /"([^"]|"")*"/g
String literal style - /"([^"\\]|\\.)*"/g

回答3:

With the above string as variable html you can use following code:

var m = html.match(/"[\s\S]*"/);
html = html.replace(m[0], m[0].replace(/,/g, '&#44;'));

OUTPUT

"Hello&#44; Tim"

Land of the free, and home of the brave

回答4:

result = subject.replace(/("[^"]+?),([^"]*?")/img, "$1,$2");

This will work properly with your example, the only catch is it will not work if you have multiple , inside of the ". If you need it to work with multiple , inside of the " then take a look at this for a more complete way to parse CSV data with javascript.

来源：https://stackoverflow.com/questions/6335264/find-comma-in-quotes-with-regex-and-replace-with-html-equiv

标签

javascript

regex

replace