I am trying to change the font size variable in my P tag using the DOM, but I am struggling to find a way to access it and modify the styles. I attempted the following code:
document.body.p.style.font-size = ""+p_var+"px";I have also tried using various methods like setAttribute, but so far, I have had no success. Can someone please demonstrate how to change the font size variable if it is possible?
Check out this snippet:
let paragraphs = document.getElementsByTagName('p');
for(let i=0; i<paragraphs.length; i++)
{
paragraphs[i].setAttribute("style","font-size:"+fontSize_var+"px");
}
Here is an example you can use:
<p id="myText">This is some text.</p>
JavaScript:
document.getElementById("myText").style.fontSize = ""+textSize+"px";
If you want to apply the style to all <p> tags, you can try this:
var elements;
elements = document.getElementsByTagName('p');
for (var j = elements.length-1; j>=0; j--) {
elements[j].style.fontSize = ""+textSize+"px";
}
Alternatively, if you have <p> tags with the same class name like below:
<p class="textClass">This is some text.</p>
<p class="textClass">This is some text.</p>
You can use this code:
var elements;
elements = document.getElementsByClassName('textClass');
for (var k = elements.length-1; k>=0; k--) {
elements[k].style.fontSize = ""+textSize+"px";
}
To achieve this using jquery, you can use the following syntax:
$("p").css({"font-size":"30px"});
To begin, set up a CSS class as shown below
.largeText {
font-size: 30px;
}
Next, use jQuery to apply the class
$("p").addClass("largeText");
Using classes is a better approach than inline CSS styling :)
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