1.利用Set 方法去重 let nums = [1,4,3,2,5,9,8,3,2,3,4,8]functionremoveDuplicate(nums) { let set=newSet(nums);returnArray.from(set) // return Array.from(new Set(nums)); } console.log(removeDuplicate(nums)); 2.利用Array indexOf, lastIndexOf ,includes,some arr.indexOf(searchEl...
1. 删除数组的重复项 2. 替换数组中的特定值 有时在创建代码时需要替换数组中的特定值,有一种很好的简短方法可以做到这一点,咱们可以使用.splice (start、value to remove、valueToAdd) ,这些参数指定咱们希望从哪里开始修改、修改多少个值和替换新值。 3. Array.from 达到 .map 的效果 咱们都知道 .map() ...
function(e){e.preventDefault()if(e.target.classList.contains('item')){originalEl=e.target// 缓存原始图DOM节点cloneEl=originalEl.cloneNode(true)// 克隆图片originalEl.style.opacity=0openPreview()// 打开预览}})functionopenPreview(){// 创建蒙层constmask=document.createElement('div')mask.class...
AI代码解释 functiontoXY(fromImgData){varresult=newArray(HEIGHT);varfromPixelData=fromImgData.data;for(varj=0;j<HEIGHT;j++){result[j]=newArray(WIDTH);for(vark=0;k<WIDTH;k++){varr=fromPixelData[4*(j*WIDTH+k)];varg=fromPixelData[4*(j*WIDTH+k)+1];varb=fromPixelData[4*(j*WIDTH+...
remove: function ( type ,fn ) { //如果消息动作队列存在 if (_message[ type ] instanceof array ){ //从最后一个消息动作序遍历 var i=_message[ type ].length -1 ; for (;i>= 0 ;i--){ //如果存在该动作在消息队列中移除 _message[ type ...
In addition to supplying a string, the JSDOM constructor can also be supplied binary data, in the form of a Node.js Buffer or a standard JavaScript binary data type like ArrayBuffer, Uint8Array, DataView, etc. When this is done, jsdom will sniff the encoding from the supplied bytes, sc...
reserved (default: [])— Pass an array of identifiers that should be excluded from mangling. Example: ["foo", "bar"]. toplevel (default: false)— Pass true to mangle names declared in the top level scope. Examples: // test.js var globalVar; function funcName(firstLongName, anotherLong...
r.rawHeadersOut{} 响应头KV Array,只读。 用法类似于r.rawHeadersIn{}。 r.respHeader(callback) 响应头处理callback注册方法。在callback中可以对后端传递的r.headersOut、r.status进行修改。 r.return/r.send/r.sendHeader/r.finish/r.respHeader无法工作在callback里面。 r.httpVersion http协议版本,0.9/...
Optional: rebuild array.js on changes:nodemon -w src/ --exec bash -c "pnpm build-rollup". Export browserstack credentials:export BROWSERSTACK_USERNAME=xxx BROWSERSTACK_ACCESS_KEY=xxx. Run tests:npx testcafe "browserstack:ie" testcafe/e2e.spec.js. ...
(where you are most likely to find built-in HLS support) the video.src URL must be on the user-driven// white-list before a 'canplay' event will be emitted; the last video event that can be reliably listened-for when the URL is not on the white-list is 'loadedmetadata'.elseif(...