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Interesting JS code

2022-04-23 08:15:00 【Ling er~】

significant js Code

1. Find all positions of a character in a string 


```bash
(function sum (item){
  var arr = 'indexhdfhsvfdgdindexbindex'
  console.log(item,'item') //index item
  var index = arr.indexOf(item)
  console.log(index,'index') //0 index
  var num = 0
  while (index >= 0) {
    num++
    index = arr.indexOf(item, index + 1)
  }
  console.log(' Altogether '+num+' Time ') // Altogether 3 Time 
})('index')

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