files/en-us/web/api/svglength/valueasstring/index.md
{{APIRef("SVG")}}
The valueAsString property of the {{domxref("SVGLength")}} interface represents the <length>'s value as a string, in the units expressed by {{domxref("SVGLength.unitType", "unitType")}}.
Setting this attribute will cause {{domxref("SVGLength.value", "value")}}, {{domxref("SVGLength.valueInSpecifiedUnits", "valueInSpecifiedUnits")}}, and {{domxref("SVGLength.unitType", "unitType")}} to be updated automatically to reflect this setting.
A string.
valueAsString// Create an SVGLength object
const svg = document.querySelector("svg");
const length = svg.createSVGLength();
// Set the length as a string
length.valueAsString = "45%";
console.log(length.valueAsString); // Output: "45%"
console.log(length.unitType); // Output: 2 (SVG_LENGTHTYPE_PERCENTAGE)
console.log(length.valueInSpecifiedUnits); // Output: 45
// Change the length value
length.valueAsString = "100px";
console.log(length.valueAsString); // Output: "100px"
console.log(length.unitType); // Output: 5 (SVG_LENGTHTYPE_PX)
console.log(length.value); // Output: 100
{{Specifications}}
{{Compat}}