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I'm using a javascript snippet in order for visitors to my site to increase the font size on all paragraphs using the following javascript:
function increaseFontSize() { var paragraphs = document.getElementsByTagName('p'); for(i=0;i<paragraphs.length;i++) { if(paragraphs[i].style.fontSize) { var s = parseInt(paragraphs[i].style.fontSize.replace("px","")); } else { var s = 14; } if(s != max) { s += 1; } paragraphs[i].style.fontSize = s+"px" } } How can I also include "li" to this code so that "p" and "li" are the selected elements that are affected?
I would also like to avoid adding a class or an id to my "li" or "ul". Is there a way to select two tags at once?
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For windows: Hold down the control (ctrl) button to select multiple options. For Mac: Hold down the command button to select multiple options.
The * selector selects all elements. The * selector can also select all elements inside another element (See "More Examples").
getElementsByTagName() The getElementsByTagName method of Document interface returns an HTMLCollection of elements with the given tag name. The complete document is searched, including the root node.
getElementsByTagName - the method name itself implies that it will return multiple elements - i.e. an array. The method always returns an array, with the length equal to the number of matching elements. As such you must always access the elements by the index of the element in the array.
No, you can't select multiple tags with a single call to getElementsByTagName. You can either do two queries using getElementsByTagName or use querySelectorAll.
JSFiddle
var elems = document.querySelectorAll('p,li') If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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