colors in sequential order in angular-CodePudding

This is the function defined in MainService.ts, it can change the color set in badgesColorSet ,I have 3 colors defined in the json config already and i want these 3 colors to change everytime I open the website lets it is red then i refresh the page it should be green and then i refresh again it should be blue. so is this function correct and should i use for loop ?and I think i need to divide it by something so it increments and goes from 0 ,1 ,2 as index?

        //gets  color out of color set from turnkey.config file for badges
    let  badgesColorSet = 0; badgesColorSet < Array.length; badgesColorSet  ;
        console.log(badgesColorSet);
        return badgesColorSet;
the colors are defined in turnkey-config.json

"badgesColorSet":["#ffff00","#f51307","#0cc902"],

this code is in the mainservice to define the background color of the material badge

badge: {bg: this.getNextColor() , fg: 'white' , title: moduleBadge},```

I tried alot of stuff and it didnt work

CodePudding user response：

for backend something similar except without localStorage. code taken from joosep

  badgesColorSet: string[] = ['#ffff00', '#f51307', '#0cc902'];
  badgesColorSelected: string;

  getIteriateColor() {
    if (!this.badgesColorSelected) {
      this.badgesColorSelected = this.badgesColorSet[0];
    } else {
      let nextColorIndex = 0;
      for (let i = 0; i < this.badgesColorSet.length; i  ) {
        if (this.badgesColorSet[i] === this.badgesColorSelected) {
          if (i <= this.badgesColorSet.length - 2) {
          nextColorIndex = i   1;
          break;
          } 
        }
      }
      this.badgesColorSelected = this.badgesColorSet[nextColorIndex];
    }
    console.log('current color is: ', this.badgesColorSelected);
  }

return getIteriateColor();