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JavaScript replace() Method

The replace() method is used to replace some characters with some other characters in a string. stringObject.replace(findstring,newstring)

Monday, Dec 31, 2007 | 1718 Views | Comments [View/Post]

stringObject.replace(findstring,newstring)
findstring: Required. Specifies a string value to find. To perform a global search add a 'g' flag to this parameter and to perform a case-insensitive search add an 'i' flag
newstring: Required. Specifies the string to replace the found value from findstring

Note: In the following example the word Microsoft will not be replaced (because the replace() method is case sensitive):
<script type="text/javascript">
          var str="Visit Microsoft!";
          document.write(str.replace(/Microsoft/, "W3Schools"));
</script>

Example 2 - Case-insensitive Search
In the following example we will perform a case-insensitive search, and the word Microsoft will be replaced:
<script type="text/javascript">var str="Visit Microsoft!";
          document.write(str.replace(/microsoft/i, "W3Schools"));
</script>

Example 3 - Global Search
<script type="text/javascript">
          var str="Welcome to Microsoft! ";
          str=str + "We are proud to announce that Microsoft has ";
          str=str + "one of the largest Web Developers sites in the world.";
          document.write(str.replace(/Microsoft/g, "W3Schools"));
</script>

Example 4 - Global and Case-insensitive Search
In the following example we will perform a global and case-insensitive match, and the word Microsoft will be replaced each time it is found, independent of upper and lower case characters:
<script type="text/javascript">
          var str="Welcome to Microsoft! ";
          str=str + "We are proud to announce that Microsoft has ";
          str=str + "one of the largest Web Developers sites in the world.";
          document.write(str.replace(/microsoft/gi, "W3Schools"));
</script>


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