The diff algorithm of almost all virtual dom on the network maintains four index variables to make dom changes. Excuse me, what is the advantage of this kind of algorithm, and why do all choose this kind of algorithm? what are the disadvantages i...
1. JS downloads files in batches. Only the last 2 can be downloaded with a tag download,. Code: var a = document.createElement "a " e = document.createEvent "mouseevents " ; e.initMouseEvent "click " falsefalse; a.hre...
I am idle and bored to look at the knowledge of browsers. These three engines have been mentioned, which have been confused all the time. can these three engines be understood as that the V8 engine is an upgraded version of both the javascript engine an...
Page assignment is 2 but page highlight is "1 ", when the paging is 2, click the edit button that shows the list information, and then click the back button to return to the sessionStorage or take the last page number, but after the return, it is fou...
subcomponents data(){ a: beijing } parent component data(){ b: } ...
<el-select v-model="value" placeholder=""> <el-option v-for="item in options" :key="item.value" :label="item.label" :value="item.value"> < el-option> < el...