Some basic DIY functions

Install：

• npm install ev-test

Usage：

• import util from 'ev-test'

Functions：

• Get the value of name in querystring:

    query(name, querystring)
  	
    // query('hello', '?hello=js') => 'js'

• Serilize data:

    serialize(data)
  
    // serialize({hello: 'js', hi: 'test'}) => 'hello=js&hi=test'

• Search DOM with selector:

    $(selector)
  	

• Remove the node from DOM:

    removeNode(node)
  	

• Insert node after target as a sibling in DOM:

    insertAfter(node, target)
  			

• Add className, which could be an array or a string, to the class list of target

    addClass(node, className)

• Remove className, which could be an array or a string, from the class list of target

    removeClass(node, className)

• Get the absolute URL of a relative URL in current page

    getAbsoluteUrl(url)
  
    // getAbsoluteUrl('/abc') => 'https://www.npmjs.com/abc'

• Debouce, to avoid shaking of the window

    debounce(callback, time)

• Remove the element of index from arr

    removeItemByIndex(index, arr) 
  
    // removeItemByIndex(1, [1,2,3]) => [1, 3]