Cross-platform PHP like sprintf/vsprintf formatting utility for browsers and Node.js
npm install jsprint-formatsprintf/vsprintf-style output—just like PHP’s, but now for modern JavaScript and TypeScript.
bash
npm install jsprint-format
`
Or via CDN:
`html
`
✨ Usage
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`ts
import { sprintf, vsprintf } from 'jsprint-format';
`
Or in a browser (via UMD):
`html
`
---
🧪 Examples
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`ts
sprintf("Hello, %s!", "world"); // "Hello, world!"
sprintf("Age -> %d", 35); // "Age -> 35"
sprintf("Pi: %.2f", 3.14159); // "Pi: 3.14"
`
---
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`ts
sprintf("Name: %(name)s, Age: %(age)d", { name: "Alice", age: 30 });
// => "Name: Alice, Age: 30"
sprintf("Coordinates: x = %(x).2f, y = %(y).2f", { x: 12.345, y: 67.89 });
// => "Coordinates: x = 12.35, y = 67.89"
`
---
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`ts
sprintf("Order: %1$s, %3$s, %2$s", "first", "second", "third");
// => "Order: first, third, second"
sprintf("%2$s costs $%1$.2f", 12.346, "Apple");
// => "Apple costs $12.35"
`
---
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`ts
sprintf("Padded Number: %04d", 42); // "Padded Number: 0042"
sprintf("Padded: [%10s]", "pad"); // "Padded: [ pad]"
sprintf("Zero-padded: [%010d]", 42); // "Zero-padded: [0000000042]"
sprintf("Space padding: [%10s]", "test"); // "Space padding: [ test]"
`
---
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`ts
sprintf("Array: %s", [1, 2, 3]); // "Array: [1,2,3]"
sprintf("Object: %s", { key: "value" }); // "Object: {\"key\":\"value\"}"
sprintf("Nested: %s", { key: { nested: true } }); // "Nested: {\"key\":{\"nested\":true}}"
`
---
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`ts
sprintf("Boolean: %s", true); // "Boolean: true"
sprintf("Null value: %s", null); // "Null value: null"
sprintf("Undefined: %s", undefined); // "Undefined: "
sprintf("Discount: %d%%", 20); // "Discount: 20%"
sprintf("100%% Complete"); // "100% Complete"
`
---
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The vsprintf variant takes the format string and an array:
`ts
vsprintf("Name: %s, Age: %d", ["Harshal", 28]); // "Name: Harshal, Age: 28"
vsprintf("%2$s costs $%1$.2f", [12.3456, "Banana"]);
// => "Banana costs $12.35"
vsprintf("Nested object: %s", [{ x: 1, y: [2, 3] }]);
// => "Nested object: {\"x\":1,\"y\":[2,3]}"
``