jsref_replace.asp

W3Schools tutorial..web designing

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<h2>Example 2 - Case-insensitive Search</h2>

<p>In the following example we will perform a case-insensitive search, and the word Microsoft 
will be replaced:</p>
<table class="ex" cellspacing="0" border="1" width="100%" id="table5">
  <tr>
    <td>
    <pre>&lt;script type=&quot;text/javascript&quot;&gt;</pre>
    <pre>var str=&quot;Visit Microsoft!&quot;;
document.write(str.replace(/microsoft/i, &quot;W3Schools&quot;));</pre>
    <pre>&lt;/script&gt;</pre>
    </td>
</tr>
</table>

<p> 
The output of the code above will be:</p>

<table class="ex" cellspacing="0" border="1" width="100%" id="table6">
  <tr>
    <td>
    <pre>Visit W3Schools!</pre>
    </td>
</tr>
</table>
<br />


<hr />

<h2>Example 3 - Global Search</h2>

<p>In the following example we will perform a global match, and the word Microsoft 
will be replaced each time it is found:</p>
<table class="ex" cellspacing="0" border="1" width="100%" id="table9">
  <tr>
    <td>
    <pre>&lt;script type=&quot;text/javascript&quot;&gt;</pre>
    <pre>var str=&quot;Welcome to Microsoft! &quot;;
str=str + &quot;We are proud to announce that Microsoft has &quot;;
str=str + &quot;one of the largest Web Developers sites in the world.&quot;;</pre>
	<pre>document.write(str.replace(/Microsoft/g, &quot;W3Schools&quot;));</pre>
    <pre>&lt;/script&gt;</pre>
    </td>
</tr>
</table>

<p> 
The output of the code above will be:</p>

<table class="ex" cellspacing="0" border="1" width="100%" id="table10">
  <tr>
    <td>
    <pre>Welcome to W3Schools! We are proud to announce that W3Schools
has one of the largest Web Developers sites in the world.</pre>
    </td>
</tr>
</table>
<br />


<hr />

<h2>Example 4 - Global and Case-insensitive Search</h2>

<p>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:</p>
<table class="ex" cellspacing="0" border="1" width="100%" id="table13">
  <tr>
    <td>
    <pre>&lt;script type=&quot;text/javascript&quot;&gt;</pre>
    <pre>var str=&quot;Welcome to Microsoft! &quot;;
str=str + &quot;We are proud to announce that Microsoft has &quot;;
str=str + &quot;one of the largest Web Developers sites in the world.&quot;;</pre>
	<pre>document.write(str.replace(/microsoft/gi, &quot;W3Schools&quot;));</pre>
    <pre>&lt;/script&gt;</pre>
    </td>
</tr>
</table>

<p> 
The output of the code above will be:</p>

<table class="ex" cellspacing="0" border="1" width="100%" id="table14">
  <tr>
    <td>
    <pre>Welcome to W3Schools! We are proud to announce that W3Schools
has one of the largest Web Developers sites in the world.</pre>
    </td>
</tr>
</table>
<br />


<hr />

<h2>Try-It-Yourself Demos</h2>
<p><a target="_blank" href="tryit.asp@filename=tryjsref_replace">replace()</a><br />
How to use replace() to replace some characters in a string.</p>
<p><a target="_blank" href="tryit.asp@filename=tryjsref_replace2">replace() 
Case-insensitive search</a><br />
How to use replace() with the 'i' flag to replace some characters in a string.</p>
<p><a target="_blank" href="tryit.asp@filename=tryjsref_replace3">replace() 
Global search</a><br />
How to use replace() with the 'g' flag to replace some characters in a string.</p>
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<a href="jsref_obj_string.asp"><img class="navup" src="../images/up.gif" alt="String Object Reference" border="0" /> Complete String Object Reference</a>
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