for example, the following two lines of code have two combination tags g. I wonder if I can tell the two combination g through the loop through document.getElementclassName (g), like div, which one I clicked with my mouse?
<g class="g">
<rect x="150" y="100" width="100" height="100" fill="red"></rect>
</g>
<g class="g">
<rect x="150" y="100" width="100" height="100" fill="green"></rect>
</g>handle it in the same way as other dom
Array.prototype.forEach.call(
document.getElementsByClassName('g'),
(e, i) => e.addEventListener('click', () => console.log(i))
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as shown in the figure, how to determine that the user clicked on this X, and execute the corresponding method. ...
var a = {0:"A",1:"B",2:"C",length:3}; var newa = Array.prototype.slice.call(a); console.log(newa); my understanding of this example is that the an object inherits and executes Array s slice method, but the slice method...
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Icon shows the red part. Choose how to write the effect in css ....
We are Mini Program s project. To get the code logged in by Wechat, request the backend api to get the sessionkey. But if it is a concurrent request, if it happens to expire at this time, and several requests go to get the sessionkey at the same time, t...
o ...
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Mobile input focus cannot directly evoke the mobile phone keyboard, what is the related auxiliary operation? Simple H5 page, do not use any framework, how to automatically evoke the soft keyboard? ...