setAttribute() Sets the value of an attribute on the specified element . If the attribute already exists, the value is updated; otherwise a new attribute is added with the specified name and value.13 Mar 2022
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HTML DOM Element setAttribute()
Read moreIs setAttribute deprecated?
In the documentation for DOM, setAttribute(Element, String, String) is deprecated , saying to use “the more appropriately named setElementProperty(Element, String, String) instead.” Does that imply that one should be using the similarly named methods of Element ?
Read moreHow do I find an element ID?
getElementById() The Document method getElementById() returns an Element object representing the element whose id property matches the specified string. Since element IDs are required to be unique if specified, they’re a useful way to get access to a specific element quickly.
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