JS implementation prohibits web page zooming (ctrl+ mouse, +, - zooming effective pro test)

background ： It's early morning 1：35 I'm still helping clients modify their web pages , Not demanding but quick money , The student party is not easy , The customer mentioned many web page optimization , This one
It gives me a headache for a long time , You don't have to step on the pit , Just look at the one below

Prohibit pulley ：

 window.addEventListener('mousewheel', function(event){
    
        if (event.ctrlKey === true || event.metaKey) {
    
              event.preventDefault();
        }
      },{
     passive: false});

      //firefox
      window.addEventListener('DOMMouseScroll', function(event){
    
          if (event.ctrlKey === true || event.metaKey) {
    
                event.preventDefault();
          }
      },{
     passive: false});

prohibit +、- ：

window.onload = function() {
    
  document.addEventListener('keydown', function (event) {
    
        if ((event.ctrlKey === true || event.metaKey === true) && (event.which === 61 || event.which === 107 || event.which === 173 || event.which === 109 || event.which === 187 || event.which === 189))
        {
    
            event.preventDefault();
        }
    }, false);
}

Complete code ：

<script>
//luwenjie hualun
      window.addEventListener('mousewheel', function(event){
    
        if (event.ctrlKey === true || event.metaKey) {
    
              event.preventDefault();
        }
      },{
     passive: false});

      //firefox
      window.addEventListener('DOMMouseScroll', function(event){
    
          if (event.ctrlKey === true || event.metaKey) {
    
                event.preventDefault();
          }
      },{
     passive: false});
//+_
window.onload = function() {
    
  document.addEventListener('keydown', function (event) {
    
        if ((event.ctrlKey === true || event.metaKey === true) && (event.which === 61 || event.which === 107 || event.which === 173 || event.which === 109 || event.which === 187 || event.which === 189))
        {
    
            event.preventDefault();
        }
    }, false);
}


</script>

Just look at the outline , Anyway, neither of them will zoom , That's it today ！