How Can I Easily Interpolate Variables into JavaScript Strings?

Interpolating Variables in JavaScript Strings: A Concise Solution

In JavaScript, you can effortlessly interpolate variables into strings without resorting to concatenation. Introducing template literals, a feature introduced in ES6, which enables you to leverage this concise and elegant syntax:

`String text ${expression}`

Simply enclose your template literal with back-ticks (`)` instead of double or single quotes. Consider the following example:

var a = 5;
var b = 10;
console.log(`Fifteen is ${a + b}.`); // Output: "Fifteen is 15."

Not only does it enhance code clarity, but it also allows for multi-line strings without the need for escaping. This is particularly beneficial when creating templates:

return `
    <div class="${foo}">
         ...
    </div>
`;

It's important to note that template literals are not supported in older browsers like Internet Explorer. To ensure cross-browser compatibility, consider using tools like Babel or Webpack to transpile your code into ES5. Additionally, Internet Explorer 8 provides limited string formatting capabilities within console.log:

console.log('%s is %d.', 'Fifteen', 15); // Output: "Fifteen is 15."

By embracing template literals, you can streamline your JavaScript code, making it both concise and readable.

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