#SET JAVASCRIPT CLAS ON PAGE LOCAD HOW TO#
Here we discuss the examples on how to use setAttribute() in JavaScript along with the outputs. This is a guide to SetAttribute JavaScript. We also have getAttribute() and removeAttribute() which are used to get the current value of an attribute and to remove an attribute respectively.
We have also noticed that the string name is case insensitive and does not return any value. SetAttribute() method is used only while dealing with DOM i.e Document Object Model as it uses literal text. In scripts.js var element = document.getElementById('sample') We shouldn’t set style attributes like the below tAttribute("style", "background-color: yellow ") We shouldn’t use javascript setAttribute() for styling, to change or add styles, we can access style object. On setting attribute value to ‘disabled’ to “ “ empty string, disabled is set to tue which automatically results in button to be disabled.If the attribute is present, regardless of its actual value, value is considered to be true else false.An empty string or name of the attribute are recommended values Call to setAttribute(), sets to disabled.We can see that the button has been disabled. Var btn = document.querySelector("button") On clicking on the button, the background color would change to yellow as specified in setAttribute(). Since there is no attribute style “ background”, the button shows the default background color.
Let us now see what happens if the attribute is not present, considering the above example. Since the attribute is present, the value will change to yellow.Then we are adding to attribute value style and background color as yellow.We shouldn’t set style attributes like the below. In the function, we are getting the item using ‘document.getElementById(“button”)’ We shouldn’t use javascript setAttribute () for styling, to change or add styles, we can access style object.
When the button gets clicked, javascript function fun_color is called.Id, onclick, and style are the attributes.On clicking on the button, the background color would change to yellow as specified in setAttribute() Calls callbackFn once for each value present in the Set object, in insertion order. This is similar to the Map object, so that each entry's key is the same as its value for a Set. Var elem = document.getElementById("button") Įlem.setAttribute("style", "background:yellow") Returns a new iterator object that contains an array of value, value for each element in the Set object, in insertion order. Var element = document.getElementById('sample') Į = "yellow" Here, after clicking on Try it, link is the href attribute set to value and now looks like a link. Example #2Ĭlick the button to set the href attribute with a value of "of the element idĭocument.getElementById("sampleAnchor").setAttribute("href", "") HTML elements define all javascript properties to standard HTML attributes hence while trying to set the attributes to non-standard attributes, the user needs to use javascript setAttribute() function. This example shows how an input field can be modified to an input button.
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