javascript - 使用jquery / javascript禁用放大浏览器？

Question

我想阻止用户使用任何方式来缩放网站内容。例如。ctrl + 滚动/在浏览器选项中选择。有没有办法使用 jquert/js 禁用浏览器中的缩放功能？谢谢

Answer 1

如果您只是想阻止用户缩放以解决表单焦点问题，例如在 iPhone 上，当表单输入放大到字段，然后在完成后不缩小，您可以使用 javascript 更改视口元标签：

    var viewportmeta = document.querySelector('meta[name="viewport"]');
    viewportmeta.content = 'user-scalable=NO, width=device-width, initial-scale=1.0'

这可以防止用户在 iPhone 上放大可缩放操作。然后，您可以直接处理任何可访问性问题，例如通过添加自己的缩放控件或在完成后重置视口元。

Answer 2

您可以通过 Ctrl+ 或 Ctrl- 或通过此代码使用 Ctrl 键 + 鼠标滚轮向上或向下禁用浏览器放大。

$(document).keydown(function(event) {
if (event.ctrlKey==true && (event.which == '61' || event.which == '107' || event.which == '173' || event.which == '109'  || event.which == '187'  || event.which == '189'  ) ) {
        event.preventDefault();
     }
    // 107 Num Key  +
    // 109 Num Key  -
    // 173 Min Key  hyphen/underscor Hey
    // 61 Plus key  +/= key
});

$(window).bind('mousewheel DOMMouseScroll', function (event) {
       if (event.ctrlKey == true) {
       event.preventDefault();
       }
});

在此处查看演示http://jsfiddle.net/VijayDhanvai/4m3z3knd/

Answer 3

可能晚了，但你可以用 jQuery 做到这一点：

$(document).ready(function(){
$(document).keydown(function(event) {
    if (event.ctrlKey==true && (event.which == '107' || event.which == '109')) {
        alert('disabling zooming ! ');
        event.preventDefault();
     }
});
})

Answer 4

试试这个 Jquery Hotkeys，你可以用这个禁用缩放： https ://github.com/tzuryby/jquery.hotkeys

Answer 5

不可以。出于可访问性的原因，您不能这样做。

Answer 6

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