JavaScript array replace element
In the JavaScript array there is not any in-built replace()
methods for replacing elements but we can implement replace() method by
using the in-built splice() method. We have already discussed the splice()
method in our JavaScript array tutorial. For implementation of replace() method
we have created a replace() method which takes three arguments as given below:
- arrayName: Array Object at which replacement
is to be done.
- repalceTo: array element to which we have to
replace in the array
- replaceWith: array element against which
replacement is to be done
function replace(arrayName,replaceTo, replaceWith)
{
for(var i=0; i<arrayName.length;i++ )
{
if(arrayName[i]==replaceTo)
arrayName.splice(i,1,replaceWith);
}
}
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Above code is the function defined for implementing
replace() method.
replace(arr,"Suman","Vineet"); Here
we have passed "Vineet" to be replaced by the array element "Suman".
Full code of javascript_array_replace.html is as
follows:
<html>
<head>
<title>
JavaScript array replace
</title>
<script type="text/javascript">
var arr = new Array(5);
arr[0]="Sandeep";
arr[1]="Suman";
arr[2]="Saurabh";
arr[3]="Vinod";
arr[4]="Amar";
function replace(arrayName,replaceTo, replaceWith)
{
for(var i=0; i<arrayName.length;i++ )
{
if(arrayName[i]==replaceTo)
arrayName.splice(i,1,replaceWith);
}
}
document.write("<b>Before Replacement</b>=>"+arr+"<br>");
replace(arr,"Suman","Vineet");
document.write("<b>After Replacement</b>=>"+arr+"<br> ");
</script>
</head>
<body bgcolor="#ffffdd">
<h2>
<font color="blue">
Example of implementing replace()<br>
method on JavaScript Array
</font>
</h2>
</body>
</html>
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Output of the example is as follows:
Download Sample Source Code
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