In javascript array element deletion method splice, with a giant pit in a for loop

One, demo

splice: The method will automatically change the length of the original array

Example:

 var Array = [ "AA", "dd", "CC", "AA" ];
    // Method 2: Remove array elements 
    Array.splice (1,1 );
    // Output Results: [ "aa", "cc "," AA "] 
   getArray (Array);

Output: aa 

　　　cc

　　　aa

Automatic array length minus one

 

Second, the actual business scenarios

In the loop for manipulation by y temp.splice (i, 1);

Be sure to remember to follow written i--

detect() {

      let temp = [];

      temp = this.tableBase;

      let userName = this.search;

      let count = 0;

      for (let i = 0; i < temp.length; i++) {

        if (!(temp[i].userName === userName)) {

          console.log(temp[i].userName);

          temp.splice (i, 1); // delete this manner will automatically update length, caution

          i--;

          //delete temp[i];

          count++;

          console.log ( "delete");

        }

      }

      console.log(count);

      this.tableBase = temp;

      console.log(this.tableBase);

    },