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Rahul
Question on javascript
1 Answer(s)      4 years and 2 months ago
Posted in : JavaScript Questions


There will be two combo box in HTML form.If selecting in one combo box(ex:child id=1),the corresponding one to one matched value(ex:Child name=ashish) get selected automatically in another combo box.How to do this using JavaScript??? or any other way in web application???


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November 17, 2010 at 1:13 PM


Hello Friend,

In javascript, you can use the following code:

<html>
<h2>ComboBox</h2>
<script language="javascript">
var arr = new Array();
arr[0] = new Array("-select-");
arr[1] = new Array("A");
arr[2] = new Array("B");
arr[3] = new Array("C");
arr[4] = new Array("D");

function change(combo1){
var comboValue = combo1.value;
document.forms["form"].elements["combo2"].options.length=0;
for (var i=0;i<arr[comboValue].length;i++){
var option = document.createElement("option");
option.setAttribute('value',i+1);
option.innerHTML = arr[comboValue][i];
document.forms["form"].elements["combo2"].appendChild(option);
}
}
</script>
<form name="form" method="post"><select name="combo1"
    onchange="change(this);">
    <option value="0">-Select-</option>
    <option value="1">1</option>
    <option value="2">2</option>
    <option value="3">3</option>
    <option value="4">4</option>
    </option>

</select><br />
<select name="combo2">
</select></form>
</html>

Thanks



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