JavaScript 检查单选按钮
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JavaScript checking radio buttons
提问by Maximillian Nahbai
Ok, this is really a simple question but I am really incompetent at JavaScript.
好吧，这确实是一个简单的问题，但我真的不擅长 JavaScript。
Basically all I have a form with 2 radio buttons on them.
基本上所有我都有一个带有 2 个单选按钮的表单。
I need a JavaScript statement which basically says
我需要一个 JavaScript 语句，它基本上说
If radiobutton1 is selected then
document.write ("radiobutton1selected")
else if radiobutton2 is selected then
document.write ("radiobutton2selected")
There are similar questions on here i accept but they are all alot more advanced than what i need.
我接受这里有类似的问题，但它们都比我需要的要先进得多。
回答by Ibu
Radio button html:
单选按钮html：
<input type="radio" name="radionbutton" value="1" id="button1"/>
<input type="radio" name="radionbutton" value="2" id="button"/>
Javascript:
Javascript：
var button1 = document.getElementById("button1");
var button2 = document.getElementById("button2");
if (button1.checked){
alert("radio1 selected");
}else if (button2.checked) {
alert("radio2 selected");
}
回答by Alex Wayne
http://jsfiddle.net/Squeegy/KCT8h/
http://jsfiddle.net/Squeegy/KCT8h/
html
html
<input type="radio" name="zing" id="foo" checked/>
<input type="radio" name="zing" id="bar"/>?
js
js
if (document.getElementById('foo').checked) {
alert('foo');
} else {
alert('bar');
}?
回答by cssGEEK
This is simple:
这很简单：
var button1 = document.getElementById('button1');
var button2 = document.getElementById('button2');
alert(button1.checked?"Button1 is checked":"Button2 is checked");
