Measure the width of given text of given font
Written byPhuoc Nguyen
Category
Level 2 — Intermediate
Created
28 Feb, 2020
Last updated
03 Mar, 2020
#1. Use the canvas' measureText() method
const measureWidth = function (text, font) {
// Create new `canvas` element
const canvas = document.createElement('canvas');
// Get the context
const context = canvas.getContext('2d');
// Set the font
context.font = font;
// Measure the text
const metrics = context.measureText(text);
// Return the width in pixels
return metrics.width;
};
#2. Use a fake element
const measureWidth = function (text, font) {
// Create an element
const ele = document.createElement('div');
// Set styles
ele.style.position = 'absolute';
ele.style.visibility = 'hidden';
ele.style.whiteSpace = 'nowrap';
ele.style.left = '-9999px';
// Set font and text
ele.style.font = font;
ele.innerText = text;
// Append to the body
document.body.appendChild(ele);
// Get the width
const width = window.getComputedStyle(ele).width;
// Remove the element
document.body.removeChild(ele);
return width;
};
#See also
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Phước Nguyễn