如何在 HTML 中禁用 Ctrl+滚轮缩放?
如何在 html 中禁用 ctrl+滚轮缩放
在 HTML 中,您无法通过 resize 事件禁用 Ctrl+滚轮缩放,因为该事件与窗口大小调整有关。以下是如何使用 JavaScript 禁用缩放:
PC 端(原生)
document.addEventListener('mousewheel', function (e) { e = e || window.event; if ((e.wheelDelta && event.ctrlKey) || e.detail) { event.preventDefault(); } }, { capture: false, passive: false}); document.addEventListener('keydown', function (event) { if ((event.ctrlKey === true || event.metaKey === true) && (event.keyCode === 61 || event.keyCode === 107 || event.keyCode === 173 || event.keyCode === 109 || event.keyCode === 187 || event.keyCode === 189)) { event.preventDefault(); } }, false);
Vue 页面
methods: { keepRatio() { let ratio = 0; // 定义缩放比例 let screen = window.screen; // 获取窗口对象 let ua = navigator.userAgent.toLowerCase(); if (window.devicePixelRatio !== undefined) { ratio = window.devicePixelRatio; // 像素大小的比例 } else if (ua.indexOf('msie')) { if (screen.deviceXDPI && screen.logicalXDPI) { ratio = screen.deviceXDPI / screen.logicalXDPI; } } else if (window.outerWidth !== undefined && window.innerWidth !== undefined) { ratio = window.outerWidth / window.innerWidth; // 外部比例/内部比例:缩放比例 } if (ratio) {ratio = Math.round(ratio * 100)} this.ratio = (ratio / 100).toFixed(2); document.body.style.zoom = 1 / this.ratio; // 窗口视图除以缩放比例:即缩放还原 } } mounted() { this.keepRatio() window.addEventListener('resize', () => { // 监听窗口缩放 this.keepRatio() }); }
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