I have this code:
<a href="javascript:alert('something1')">Click</a>
<a href="javascript:prompt('something2')">Click</a>
<a href="javascript:alert('something3')">Click</a>
<a href="javascript:prompt('something4')">Click</a>
Now, using console.log(document.querySelectorAll("a[href^='javascript:prompt('],a[href^='javascript:alert(']"));
would fetch all such elements as NodeList.
But, I have the HTML text given with different case of letters in javascript
. That is, look at the following code:
<a href="javaSCRIPT:alert('something1')">Click</a>
<a href="JaVaScRIPt:prompt('something2')">Click</a>
<a href="javaSCRIpt:alert('something3')">Click</a>
<a href="JAVAscrIPt:prompt('something4')">Click</a>
I referred this, but using *=
instead of ^=
doesn't help. I know ^=
equates to 'starts with', but what does *=
mean?
How can I write a generic querySelectorAll
for all such permutations of javascript
?
querySelector is case sensitive for elements in the SVG namespace.
The querySelectorAll() method in HTML is used to return a collection of an element's child elements that match a specified CSS selector(s), as a static NodeList object. The NodeList object represents a collection of nodes. The nodes can be accessed by index numbers.
querySelectorAll is much faster than getElementsByTagName and getElementsByClassName when accessing a member of the collection because of the differences in how live and non-live collections are stored. But again, getElementsByTagName and getElementsByClassName are not slow.
About the differences, there is an important one in the results between querySelectorAll and getElementsByClassName : the return value is different. querySelectorAll will return a static collection, while getElementsByClassName returns a live collection.
At least Chrome and Firefox support the case-insensitivity qualifier i
in an selector (as defined in here: https://drafts.csswg.org/selectors-4/#overview)
var divs = document.querySelectorAll('div[class^="foo" i]');
console.log(divs.length); // should be 3 :)
<div class="foobar">foobar</div>
<div class="Foobar">Foobar</div>
<div class="fOobar">fOobar</div>
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