之前一直是通过如下代码禁止缩放的,但对ios10+无效

<meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no" />

后来发现添加一段js,对ios有效,甚至可以让有些手机浏览器中强制允许缩放网页开关失效,比如小米自带浏览器。

<script>
window.onload = function() {
    // 阻止双击放大
    var lastTouchEnd = 0;
    document.addEventListener('touchstart', function(event) {
        if (event.touches.length > 1) {
            event.preventDefault();
        }
    });
    document.addEventListener('touchend', function(event) {
        var now = (new Date()).getTime();
        if (now - lastTouchEnd <= 300) {
            event.preventDefault();
        }
        lastTouchEnd = now;
    }, false);

    // 阻止双指放大
    document.addEventListener('gesturestart', function(event) {
        event.preventDefault();
    });
}
</script>