String.prototype.interpole = function () {
    var c=0, txt=this;
    while (txt.search(/{var}/g) > 0){
        txt = txt.replace(/{var}/, arguments[c]);
        c++;
    }
    return txt;
}

Uso:

var hello = "foo";
var my_string = "I pity the {var}".interpole(hello);
//resultado "I pity the foo"

Var hello = "foo";

var my_string ="I pity the";

console.log (my_string,你好)

2020年和平语录:

Console.WriteLine("I {0} JavaScript!", ">:D<");

console.log(`I ${'>:D<'} C#`)

简单的使用方法:

var util = require('util');

var value = 15;
var s = util.format("The variable value is: %s", value)

String.prototype.interpole = function () {
    var c=0, txt=this;
    while (txt.search(/{var}/g) > 0){
        txt = txt.replace(/{var}/, arguments[c]);
        c++;
    }
    return txt;
}

Uso:

var hello = "foo";
var my_string = "I pity the {var}".interpole(hello);
//resultado "I pity the foo"

你可以这么做，但它不是一般的

'I pity the $fool'.replace('$fool', 'fool')

如果确实需要，您可以轻松地编写一个函数来智能地执行此操作