About determining whether a radio box is checked for detailed instructions

Last Update:2017-01-13 Source: Internet

Author: User

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About determining whether a radio box is checked for detailed instructions

It's a core piece of code.

for (Var i=0,l=radios.length;i<l;i++)
{
if (!hash[radios[i].name])
Hash[radios[i].name] = [Radios[i]]
Else
Hash[radios[i].name].push (Radios[i]);
}

Now let's take a look at the detailed application examples

<body>
<input type= "Radio" Name= "a" checked=checked value= "addd"/><input type= "Radio" Name= "a" value= "ACCC"/> <input type= "Radio" Name= "a" value= "ACCC"/><input type= "Radio" Name= "a" value= "ACCC"/>
<input type= "Radio" name= "B" value= "BCCC"/><input type= "Radio" name= "B" value= "BCCC"/><input type= " Radio "Name=" "B" value= "BCCC"/>
<input type= "Radio" name= "C" checked=checked value= "ceee"/><input type= "Radio" name= "C" value= "Ceee"/> <input type= "Radio" name= "C" value= "Ceee"/>
<input type= "Radio" name= "D" checked=checked value= "DFFF"/><input type= "Radio" name= "D" value= "Dfff"/> <input type= "Radio" name= "D" value= "Dfff"/>
<input type= "Radio" Name= "E" checked=checked value= "ehhh"/><input type= "Radio" Name= "E" value= "Ehhh"/> <input type= "Radio" Name= "E" value= "Ehhh"/>
</body>
<script>
function Check () {
var mm=document.getelementsbytagname ("input");
var mask=0;
var temp=[];
var temp1=[];
if (mm.lenght<1) {alert (' err ');}
else{
for (i=0;i<mm.length;i++) {
if (mm[i].type== "Radio" &&mm[i].checked==true) {
Temp.push (Mm[i].value)
mask++;
}
else if (mm[i].type== "Radio" &&mm[i].checked==false) {
Temp1.push (Mm[i].value)

}
}
Alert ("Selected" +temp+ "N is not selected" +TEMP1);
if (mask==0) {alert (' no checked ')}
}
}
Check ();
</script>

Change automatic selection to single selection

<lable>
<input type= "Radio" name= "a"/> The <input type= "Radio" name= "a"/> <input type= "Radio" name= "a"/> <inpu T type= "Radio" name= "a"/>
</lable>
<br/>
<lable>
<input type= "Radio" name= "B"/> <input "type=" Radio "" B "name=/> <input" type= "Radio" B "name=/> T type= "Radio" name= "B"/>
</lable>
<br/>
<lable>
<input type= "Radio" name= "C"/> <input "type= Radio" name= "C"/> <input type= "Radio" name= "C"/> <inpu T type= "Radio" name= "C"/>
</lable>
<div><button onclick= "Checkradio ()" >checkall</button></div>
<script type= "text/web Effects" >
function Checkradio ()
{
var inputs = document.getElementsByTagName ("input");
var radios = [];
for (Var i=0,l=inputs.length;i<l;i++)
{
if (inputs[i].type== "Radio" && Inputs[i].name)
Radios.push (Inputs[i]);
}
var hash= {};
for (Var i=0,l=radios.length;i<l;i++)
{
if (!hash[radios[i].name])
Hash[radios[i].name] = [Radios[i]]
Else
Hash[radios[i].name].push (Radios[i]);
}
for (var i in hash)
{
var iflag = false;
for (Var j=0,l=hash[i].length;j<l;j++)
{
if (hash[i][j].checked)
{
Iflag = true;
Break
}
}
if (!iflag)
{
Alert ("Name +i+") has not been selected for this set of radio boxes! ");
return false;
}
}
Alert ("Congratulations,all pass!");
return true;
}
</script>

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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