you can combine the steps of computing each validation step and setting the state into one statement:

validationrules = (param) => {
  console.log("password", param);
    charlength: this.islength(param),
    lowercase: this.lowercase(param),
    uppercase: this.uppercase(param),
    number: this.isnumber(param),

edit: also fyi, return str.length > 2 ? true : false; can just be shortened to return str.length > 2;

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