禁用网页放大缩小方法

禁用网页放大缩小方法：

<script>
    // 禁用网页放大缩小方法
    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);
    // Chrome IE 360
    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
    });
    </script>