阻止用户在表单字段中输入

I'm trying to prevent users from entering < or > into my form fields using JavaScript. Here's what I have so far:

我正在尝试阻止用户使用JavaScript将 <或> 输入到我的表单字段中。这是我到目前为止所拥有的:

$(document).on('keydown', function (e) {
    regex = new RegExp("\<|>");
    var key = String.fromCharCode(!event.charCode ? event.which : event.charCode);
    if (!regex.test(key)) {
        event.preventDefault();
        return false;
    }
});

It's still allowing those characters, how do I stop this?

它仍然允许这些角色,我该如何阻止它?

2 个解决方案

#1

Why bother translating then regexing? I like to keep it simple:

为什么要费心翻译呢?我喜欢保持简单:

$(document).on('keypress', function (e) {
    if ((e.which == 62) || (e.which == 60)) { // greater than or less than key pressed
        e.preventDefault();
    }    
});

Edit to add:

编辑添加:

Alternate if condition based on @Samsquanch feedback:

如果条件基于@Samsquanch反馈,则替换:

if ((String.fromCharCode(e.which) == '>') || (String.fromCharCode(e.which) == '<')) { // greater than or less than key pressed

2 个解决方案

#1

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