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What does layui.util do?Apr 02, 2024 am 12:09 AM
key value paircode readability

The role of layui.util

layui.util is a set of practical tool functions provided in the layui framework, designed to simplify front-end development tasks and improve code readability and maintainability functionality and reusability.

Specific functions include:

Operation arrays and objects

  • extend(target, source) : Expand the properties of the source object for the target object
  • clone(source, deep): Copy the source object deeply or shallowly
  • difference(arr1 , arr2): Get the difference item between two arrays

Date and time operation

  • extend(target , source): Expand the properties of the source object for the target object
  • clone(source, deep): Deep or shallow copy of the source object
  • difference(arr1, arr2): Get the difference item between two arrays

Form operation

  • ##valid( form, rules): Verify whether the form fields comply with the rules
  • verify(): Customize the form validation rules
  • serialize(form): Serialize form data into key-value pairs

Event operation

  • on(element, event, callback):Bind event listener
  • off(element, event):Remove event listener
  • bind(callback, context): Context of binding callback function

Other practical functions

    ##escape(html)
  • : Escape HTML characters
  • unescape(str)
  • : Escape HTML characters
  • randomNum(min, max)
  • : Generate random numbers within the specified range
Usage Example

// 扩展对象
layui.util.extend(targetObj, sourceObj);

// 复制对象
const clonedObj = layui.util.clone(obj, true);

// 验证表单
layui.util.valid(form, {
  username: {
    required: true
  }
});

// 为元素绑定单击事件
layui.util.on(element, 'click', function() {
  // ...
});
By using the practical functions provided in layui.util, developers can easily and efficiently handle various common tasks and simplify the front-end development process.

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