javascript 当包含 jQuery 时，HTML 选择元素类型为“select-one”。它是跨浏览器的价值吗？
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HTML select element type is 'select-one' when jQuery is included. Is it a cross browser value?
提问by Jach Many
When I alerted the type of a select element in JavaScript it displayed 'select-one'. But I thought it would display an empty string.
当我在 JavaScript 中提醒选择元素的类型时，它显示“select-one”。但我认为它会显示一个空字符串。
alert(document.getElementById('catsel').type)
// where catsel is a select box. it displayed select-one
I tested this in Firefox 3.0.0.10
我在 Firefox 3.0.0.10 中对此进行了测试
Is it a cross browser value? I have never used this property until now. I just want to know whether the value select-one is the same in all browsers.
它是跨浏览器的价值吗？直到现在我从未使用过这个属性。我只想知道值 select-one 在所有浏览器中是否都相同。
Besides I am using jQuery in my page. When I searched throughout the project for the string "select-one" matches were found in jquery.js. So I conclude that when the page had loaded jQuery is setting a property 'type' to the select elements. Am I right?
此外我在我的页面中使用 jQuery。当我在整个项目中搜索字符串“select-one”时，在 jquery.js 中找到了匹配项。所以我得出结论，当页面加载时，jQuery 正在为选择元素设置一个属性“类型”。我对吗？
回答by Yi Jiang
The typeproperty is actually a DOM property native to form input elements, and doesn't have anything to do with jQuery - you can quickly corroborate this by running this on anywebsite:
该type属性实际上是表单输入元素的原生 DOM 属性，与 jQuery 没有任何关系 - 您可以通过在任何网站上运行它来快速证实这一点：
console.log(document.createElement('select').type);
For selectelements, the two possible values it could take is select-onefor normal select elements, ad select-multiplewhen more than one value is accepted (ie. when a valid multipleattribute is set).
对于select元素，它可能采用的两个可能值是select-one用于普通选择元素，select-multiple当接受多个值时（即当multiple设置了有效属性时）。
The value should be cross-browser compatible - I could not find any information disputing this.
该值应该是跨浏览器兼容的 - 我找不到任何对此有争议的信息。
