# SelectorQuery NodesRef.fields(Object fields, function callback)

with Promise style call: Not supported

Mini Program plugin: Support

Gets information about the node. The fields to fetch are specified in fields. The return value is nodesRef Corresponding selectorQuery

# parameter

# Object fields

attribute	type	Default values	Required	Introductions	Minimum version
id	boolean	false	no	Returns a node id
dataset	boolean	false	no	Returns a node dataset
mark	boolean	false	no	Returns a node mark
rect	boolean	false	no	Returns the node layout location`left` `right` `top` `bottom`）
size	boolean	false	no	Returns the node size`width` `height`）
scrollOffset	boolean	false	no	no Whether to return a node's `scrollLeft` `scrollTop`Node must be `scroll-view` or `viewport`
properties	Array.&ltstring&gt	[]	no	Specifies a list of property names that returns the current property value of the node corresponding to the property name. class style And event - bound property values are not available
computedStyle	Array.&ltstring&gt	[]	no	Specifies a list of style names and returns the current value of the node corresponding to the style name	2.1.0
context	boolean	false	no	Returns the corresponding node Context object	2.4.2
node	boolean	false	no	Returns the corresponding node Node Example	2.7.0

# function callback

callback

# parameter

# Object res

Node related information

# Return value

# SelectorQuery

# Be careful

computedStyle Has a higher priority than Size, when at the same time computedStyle Lee specified width/height And passed in size: True, returns first computedStyle Acquired width/height。

# sample code

Page({
  getFields () {
    wx.createSelectorQuery().select('#the-id').fields({
      dataset: true,
      size: true,
      scrollOffset: true,
      properties: ['scrollX', 'scrollY'],
      computedStyle: ['margin', 'backgroundColor'],
      context: true,
    }, function (res) {
      res.dataset    // DataSet for Node
      res.width      // Width of node
      res.height     // Node height
      res.scrollLeft // Horizontal scrolling position of node
      res.scrollTop  // Vertical scroll position of node
      res.scrollX    // node scroll-x Property's current value
      res.scrollY    // node scroll-y Property's current value
      // Returns the specified style name to be returned here
      res.margin
      res.backgroundColor
      res.context    // Node corresponding Context object
    }).exec()
  }
})