Anything similar in javascript to ruby's #{value} (string interpolation) [duplicate]

Question

i am tired of writing this:

string_needed="prefix....." + topic + "suffix...." + name + "testing";

i would think someone might have done something about this by now ;)

Answer 1

ES6 Update:

ES6 added template strings, which use backticks (`) instead of single or double quotes. In a template string, you can use the ${} syntax to add expressions. Using your example, it would be:

string_needed = `prefix.....${topic}suffix....${name}testing`

Original answer:

Sorry :(

I like to take advantage of Array.join:

["prefix ....", topic, "suffix....", name, "testing"].join("")

or use String.concat

String.concat("a", 2, "c")

or you could write your own concatenate function:

var concat = function(/* args */) {
    /*
     * Something involving a loop through arguments
     */
}

or use a 3rd-party sprintf function, such as http://www.diveintojavascript.com/projects/javascript-sprintf

Answer 2

You could consider using coffeescript to write the code (which has interpolation like Ruby ie #{foo}).

It 'compiles' down to javascript - so you will end up with javascript like what you've written, but without the need to write/maintain the +++ code you're tired of

I realize that asking you to consider another language is on the edge of being a valid answer or not but considering the way coffeescript works, and that one of your tags is Ruby, I'm hoping it'll pass.