updateAttrs() — vue Function Reference

Architecture documentation for the updateAttrs() function in attrs.ts from the vue codebase.

Function typescript WebPlatform WebRuntime calls 1

Entity Profile

WebPlatform→ WebRuntime→ updateAttrs() — vue Function Reference

Dependency Diagram

graph TD
  a0aca0ca_c52c_4a74_dca5_c7f2b48367cb["updateAttrs()"]
  79ac8337_fd93_af91_1c63_9d155d74dbf5["attrs.ts"]
  a0aca0ca_c52c_4a74_dca5_c7f2b48367cb -->|defined in| 79ac8337_fd93_af91_1c63_9d155d74dbf5
  ba2408c9_3afc_6948_9503_46554375131e["setAttr()"]
  a0aca0ca_c52c_4a74_dca5_c7f2b48367cb -->|calls| ba2408c9_3afc_6948_9503_46554375131e
  style a0aca0ca_c52c_4a74_dca5_c7f2b48367cb fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

src/platforms/web/runtime/modules/attrs.ts lines 16–55

function updateAttrs(oldVnode: VNodeWithData, vnode: VNodeWithData) {
  const opts = vnode.componentOptions
  if (isDef(opts) && opts.Ctor.options.inheritAttrs === false) {
    return
  }
  if (isUndef(oldVnode.data.attrs) && isUndef(vnode.data.attrs)) {
    return
  }
  let key, cur, old
  const elm = vnode.elm
  const oldAttrs = oldVnode.data.attrs || {}
  let attrs: any = vnode.data.attrs || {}
  // clone observed objects, as the user probably wants to mutate it
  if (isDef(attrs.__ob__) || isTrue(attrs._v_attr_proxy)) {
    attrs = vnode.data.attrs = extend({}, attrs)
  }

  for (key in attrs) {
    cur = attrs[key]
    old = oldAttrs[key]
    if (old !== cur) {
      setAttr(elm, key, cur, vnode.data.pre)
    }
  }
  // #4391: in IE9, setting type can reset value for input[type=radio]
  // #6666: IE/Edge forces progress value down to 1 before setting a max
  /* istanbul ignore if */
  if ((isIE || isEdge) && attrs.value !== oldAttrs.value) {
    setAttr(elm, 'value', attrs.value)
  }
  for (key in oldAttrs) {
    if (isUndef(attrs[key])) {
      if (isXlink(key)) {
        elm.removeAttributeNS(xlinkNS, getXlinkProp(key))
      } else if (!isEnumeratedAttr(key)) {
        elm.removeAttribute(key)
      }
    }
  }
}