custom textInput filter JS

gistfile1.txt

//custom textInput filter. 

function setInputFilter(textbox, inputFilter) {
  ["input", "keydown", "keyup", "mousedown", "mouseup", "select", "contextmenu", "drop"].forEach(function (event) {
    textbox.addEventListener(event, function () {
      if (inputFilter(this.value)) {
        this.oldValue = this.value;
        this.oldSelectionStart = this.selectionStart;
        this.oldSelectionEnd = this.selectionEnd;
      } else if (this.hasOwnProperty("oldValue")) {
        this.value = this.oldValue;
        this.setSelectionRange(this.oldSelectionStart, this.oldSelectionEnd);
      }
    });
  });
}

//usage example
setInputFilter(document.getElementById("salary-c"), function (value) {
  return /^-?\d*$/.test(value); //ofc regex
});

module.exports = setInputFilter;