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Updated cache:true instructions for $.getScript #1054

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JavaScript Style Guide
oriadam Feb 10, 2018
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JavaScript Style Guide
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@oriadam
oriadam authored Feb 10, 2018
commit 2fd585da10ce3c3ae1300d7eb289bd4f12b2cf46
237 changes: 120 additions & 117 deletions entries/jQuery.getScript.xml
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<?xml version="1.0"?>
<entry type="method" name="jQuery.getScript" return="jqXHR">
<title>jQuery.getScript()</title>
<signature>
<added>1.12</added>
<argument name="settings" type="PlainObject">
<desc>A set of key/value pairs that configure the Ajax request. All settings are optional except for <code>url</code>. See <a href="/jQuery.ajax/#jQuery-ajax-settings">jQuery.ajax( settings )</a> for a complete list of all settings.</desc>
</argument>
<argument name="success" optional="true" type="Function">
<argument name="script" type="String" />
<argument name="textStatus" type="String"/>
<argument name="jqXHR" type="jqXHR"/>
<desc>A callback function that is executed if the request succeeds.</desc>
</argument>
</signature>
<signature>
<added>1.0</added>
<argument name="url" type="String">
<desc>A string containing the URL to which the request is sent.</desc>
</argument>
<argument name="success" optional="true" type="Function">
<argument name="script" type="String" />
<argument name="textStatus" type="String"/>
<argument name="jqXHR" type="jqXHR"/>
<desc>A callback function that is executed if the request succeeds.</desc>
</argument>
</signature>
<desc>Load a JavaScript file from the server using a GET HTTP request, then execute it.</desc>
<longdesc>
<p>This is a shorthand Ajax function, which is equivalent to:</p>
<pre><code>
<title>jQuery.getScript()</title>
<signature>
<added>1.12</added>
<argument name="settings" type="PlainObject">
<desc>A set of key/value pairs that configure the Ajax request. All settings are optional except for <code>url</code>. See <a href="/jQuery.ajax/#jQuery-ajax-settings">jQuery.ajax( settings )</a> for a complete list of all settings.</desc>
</argument>
<argument name="success" optional="true" type="Function">
<argument name="script" type="String" />
<argument name="textStatus" type="String"/>
<argument name="jqXHR" type="jqXHR"/>
<desc>A callback function that is executed if the request succeeds.</desc>
</argument>
</signature>
<signature>
<added>1.0</added>
<argument name="url" type="String">
<desc>A string containing the URL to which the request is sent.</desc>
</argument>
<argument name="success" optional="true" type="Function">
<argument name="script" type="String" />
<argument name="textStatus" type="String"/>
<argument name="jqXHR" type="jqXHR"/>
<desc>A callback function that is executed if the request succeeds.</desc>
</argument>
</signature>
<desc>Load a JavaScript file from the server using a GET HTTP request, then execute it.</desc>
<longdesc>
<p>This is a shorthand Ajax function, which is equivalent to:</p>
<pre><code>
$.ajax({
url: url,
dataType: "script",
success: success
url: url,
dataType: "script",
success: success
});
</code></pre>
<p>The script is executed in the global context, so it can refer to other variables and use jQuery functions. Included scripts can have some impact on the current page.</p>
<h4 id="success-callback">
Success Callback
</h4>
<p>The callback is fired once the script has been loaded but not necessarily executed.</p>
<p>Scripts are included and run by referencing the file name:</p>
<pre><code>
</code></pre>
<p>The script is executed in the global context, so it can refer to other variables and use jQuery functions. Included scripts can have some impact on the current page.</p>
<h4 id="success-callback">Success Callback</h4>
<p>The callback is fired once the script has been loaded but not necessarily executed.</p>
<p>Scripts are included and run by referencing the file name:</p>
<pre><code>
$.getScript( "ajax/test.js", function( data, textStatus, jqxhr ) {
console.log( data ); // Data returned
console.log( textStatus ); // Success
console.log( jqxhr.status ); // 200
console.log( "Load was performed." );
console.log( data ); // Data returned
console.log( textStatus ); // Success
console.log( jqxhr.status ); // 200
console.log( "Load was performed." );
});
</code></pre>
<h4 id="handling-errors">Handling Errors</h4>
<p>As of jQuery 1.5, you may use <a href="/deferred.fail/"><code>.fail()</code></a> to account for errors:</p>
<pre><code>
</code></pre>
<h4 id="handling-errors">Handling Errors</h4>
<p>As of jQuery 1.5, you may use <a href="/deferred.fail/"><code>.fail()</code></a> to account for errors:</p>
<pre><code>
$.getScript( "ajax/test.js" )
.done(function( script, textStatus ) {
console.log( textStatus );
})
.fail(function( jqxhr, settings, exception ) {
$( "div.log" ).text( "Triggered ajaxError handler." );
});
</code></pre>
<p>Prior to jQuery 1.5, the global <code>.ajaxError()</code> callback event had to be used in order to handle <code>$.getScript()</code> errors:</p>
<pre><code>
$( "div.log" ).ajaxError(function( e, jqxhr, settings, exception ) {
if ( settings.dataType == "script" ) {
$( this ).text( "Triggered ajaxError handler." );
}
});
</code></pre>
<h4 id="caching-requests">Caching Responses</h4>
<p>By default, <code>$.getScript()</code> sets the cache setting to <code>false</code>. This appends a timestamped query parameter to the request URL to ensure that the browser downloads the script each time it is requested.
You can override this feature by using a settings object, as of jQuery 1.12:</p>
<pre><code>
$.getScript({
url: "foo.js",
cache: true
});
</code></pre>

<p>You can also override this feature by setting the cache property globally using <a href="/jquery.ajaxsetup/"><code>$.ajaxSetup()</code></a>:</p>
<pre><code>
$.ajaxSetup({
cache: true
});
$.getScript("foo.js");
</code></pre>

<p></p>
</longdesc>
<example>
<desc>Load the <a href="https://github.com/jquery/jquery-color">official jQuery Color Animation plugin</a> dynamically and bind some color animations to occur once the new functionality is loaded. Enable browser caching.</desc>
<code><![CDATA[
.done( function( script, textStatus ) {
console.log( textStatus );
} )
.fail( function( jqxhr, settings, exception ) {
$( "div.log" ).text( "Triggered ajaxError handler." );
} );
</code></pre>
<p>Prior to jQuery 1.5, the global <code>.ajaxError()</code> callback event had to be used in order to handle <code>$.getScript()</code> errors:</p>
<pre><code>
$( "div.log" )
.ajaxError( function( e, jqxhr, settings, exception ) {
if ( settings.dataType === "script" ) {
$( this ).text( "Triggered ajaxError handler." );
}
} );
</code></pre>
<h4 id="caching-requests">Caching Responses</h4>
<p>By default, <code>$.getScript()</code> sets the cache setting to <code>false</code>. This appends a timestamped query parameter to the request URL to ensure that the browser downloads the script each time it is requested.
You can override this feature by using a settings object, as of jQuery 1.12:</p>
<pre><code>
$.getScript( {
url: "foo.js",
cache: true
} );
</code></pre>

<p>You can also override this feature by setting the cache property globally using <a href="/jquery.ajaxsetup/"><code>$.ajaxSetup()</code></a>:</p>
<pre><code>
$.ajaxSetup( {
cache: true
} );
$.getScript( "foo.js" );
</code></pre>

<p></p>
</longdesc>
<example>
<desc>Load the <a href="https://github.com/jquery/jquery-color">official jQuery Color Animation plugin</a> dynamically and bind some color animations to occur once the new functionality is loaded. Enable browser caching.</desc>
<code><![CDATA[
var settings = {
url: "https://code.jquery.com/color/jquery.color.js",
cache: true // Enable browser caching. Cache is highly recommended when loading static scripts such as plugins.
};
// Override toString for backward compatibility with jQuery prior to 1.12 (though it will prevent browser caching)
settings.toString = function() {
return this.url;
};
url: "https://code.jquery.com/color/jquery.color.js",

// Enable browser caching. Cache is highly recommended when loading static scripts such as plugins.
cache: true
};

// Override toString for backward compatibility with jQuery prior to 1.12 (though it will prevent browser caching)
settings.toString = function() {
return this.url;
};
$.getScript( settings, function() {
$( "body,div" ).css('background','')
.animate({
backgroundColor: "rgb(255, 180, 180)"
}, 500 )
.delay( 500 )
.animate({
backgroundColor: "olive"
}, 500 )
.delay( 500 )
.animate({
backgroundColor: "#00f"
}, 500 );
$( "body,div" )
.css( "background", "" )
.animate( {
backgroundColor: "rgb(255, 180, 180)"
}, 500 )
.delay( 500 )
.animate( {
backgroundColor: "olive"
}, 500 )
.delay( 500 )
.animate( {
backgroundColor: "#00f"
}, 500 );
});
]]></code>
<html><![CDATA[
<html><![CDATA[
<button id="go">&raquo; Run</button>
<div class="block"></div>
]]></html>
<css><![CDATA[
.block {
background-color: blue;
width: 150px;
height: 70px;
margin: 10px;
}
<css><![CDATA[
.block {
background-color: blue;
width: 150px;
height: 70px;
margin: 10px;
}
]]></css>
</example>
<category slug="ajax/shorthand-methods"/>
<category slug="version/1.0"/>
<category slug="version/1.5"/>
</example>
<category slug="ajax/shorthand-methods"/>
<category slug="version/1.0"/>
<category slug="version/1.5"/>
</entry>