Combining CSS and JavaScript files into a single .js file

I attempted to consolidate all of my CSS code into my JavaScript and then load it through a JS file. I followed this approach, but encountered an issue. Here are the initial lines of my JS file:

var innerstyle = '#container{width:800px;background:silver;margin:20px auto;padding:10px;color:gray;border-radius:5px}input{padding:3px}input[name="jsvar"]{width:250px;font-family:courier}#display{border:2px gray solid;border-radius:5px;color:white;margin:10px 0}#display #dtitle{background:gray;border-radius:2px 0;padding:10px 5px}#display #dmsg{min-height:20px}#clear{float:right;cursor:pointer;text-decoration:none;color:white;background:red;padding:2px 10px;border-radius:5px}#clear:hover{background:gold}.rtitle{padding:8px;background:pink;text-align:center}.rtitle input{border:1px solid red;float:right}.rtext{max-height:200px;overflow:auto;margin-bottom:5px}.rtext td{min-width:100px}.secfilter{margin-left:5px}';
var styletag = document.createElement('style');
var inst = document.createTextNode(innerstyle);
styletag.appendChild(inst);
var headref = document.getElementsByName('head');
headref.appendChild(styletag);

Upon checking the Chrome console message, I received the following error:

Uncaught TypeError: undefined is not a function
Line 6;

Answer №1

var innerstyle = '#container{width:800px;background:silver;margin:20px auto;padding:10px;color:gray;border-radius:5px}input{padding:3px}input[name="jsvar"]{width:250px;font-family:courier}#display{border:2px gray solid;border-radius:5px;color:white;margin:10px 0}#display #dtitle{background:gray;border-radius:2px 0;padding:10px 5px}#display #dmsg{min-height:20px}#clear{float:right;cursor:pointer;text-decoration:none;color:white;background:red;padding:2px 10px;border-radius:5px}#clear:hover{background:gold}.rtitle{padding:8px;background:pink;text-align:center}.rtitle input{border:1px solid red;float:right}.rtext{max-height:200px;overflow:auto;margin-bottom:5px}.rtext td{min-width:100px}.secfilter{margin-left:5px}';
var styletag = document.createElement('style');
var inst = document.createTextNode(innerstyle);
styletag.appendChild(inst);
//var headref = document.getElementsByName('head'); // Not the correct method!
var headref = document.getElementsByTagName('head')[0];
headref.appendChild(styletag);

Using HTML DOM getElementsByName retrieves all elements in the document with the specified name attribute value) ("Name" attribute is outdated in HTML5 and has been replaced by "ID" attribute for many elements. It is recommended to use getElementById as suggested by @t.niese) like

<input name="somename" />

document.getElementsByName("somename");

Alternatively, you can utilize the ID of the element like

<input name="somename" id="theId" />

and access the element using:

document.getElementById('theId')

getElementById fetches the element that contains the specified value in its ID attribute

HTML DOM getElementsByTagName(tag) identifies all elements with the tag name "tag" and returns an array, thereby if searching by the tag name 'head', the initial position in the array corresponds to the head element.

Answer №2

When utilizing the function

document.getElementsByName('head');
, an array is returned. Consider using this alternative:

document.getElementsByName('head')[0]

This will provide you with the first element found with the name head.

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