style="${staticStyle}": Interpolation inside attributes has

Error message

style="${staticStyle}": Interpolation inside attributes has been removed. Use v-bind or the colon shorthand instead. For example, instead of <div style="{{ val }}">, use <div :style="val">.

What it means

Web platform style-attribute interpolation warning: style="{{ val }}" is unsupported since Vue 2. transformNode runs parseText on the static style attribute and warns in dev builds when delimiters are detected.

Source

Thrown at src/platforms/web/compiler/modules/style.js:19

/* @flow */

import { parseText } from 'compiler/parser/text-parser'
import { parseStyleText } from 'web/util/style'
import {
  getAndRemoveAttr,
  getBindingAttr,
  baseWarn
} from 'compiler/helpers'

function transformNode (el: ASTElement, options: CompilerOptions) {
  const warn = options.warn || baseWarn
  const staticStyle = getAndRemoveAttr(el, 'style')
  if (staticStyle) {
    /* istanbul ignore if */
    if (process.env.NODE_ENV !== 'production') {
      const expression = parseText(staticStyle, options.delimiters)
      if (expression) {
        warn(
          `style="${staticStyle}": ` +
          'Interpolation inside attributes has been removed. ' +
          'Use v-bind or the colon shorthand instead. For example, ' +
          'instead of <div style="{{ val }}">, use <div :style="val">.'
        )
      }
    }
    el.staticStyle = JSON.stringify(parseStyleText(staticStyle))
  }

  const styleBinding = getBindingAttr(el, 'style', false /* getStatic */)
  if (styleBinding) {
    el.styleBinding = styleBinding
  }
}

function genData (el: ASTElement): string {
  let data = ''

View on GitHub (pinned to 6c5d78ee04)

Solutions

Use :style="styleObject" or :style="cssString" instead of interpolation.
Compute units/width in JS: :style="{ width: w + 'px' }".
Move static styles to a plain style attribute or CSS classes.

Example fix

// before
<div style="width: {{ width }}px">
// after
<div :style="{ width: width + 'px' }">

Defensive patterns

Strategy: validation

Validate before calling

function assertNoStyleInterpolationWeb (template) {
  if (/style\s*=\s*["'][^"']*\{\{/.test(template)) {
    throw new Error('Interpolation in style attr; use :style instead')
  }
}
assertNoStyleInterpolationWeb('<div style="{{ s }}">')

Type guard

const isStaticStyleWeb = (v) => typeof v === 'string' && !v.includes('{{');

Prevention

Use :style bindings for dynamic inline styles
Move static styles into CSS classes
Lint templates in CI with eslint-plugin-vue
Regex-scan migrations for style="{{

When it happens

Trigger: Compiling a template element with a static `style` attribute containing mustache delimiters (e.g. style="width: {{ w }}px") in dev mode.

Common situations: Vue 1 to Vue 2 migration; dynamically built inline styles in old code; templates from legacy libraries.

Related errors

AI-assisted analysis of Meituan-Dianping/mpvue@6c5d78ee04 (2026-09-02). Data as JSON: /api/errors/57cd0b299425dd89. Report an issue: GitHub.