一、Array.prototype.{flat, flatMap} 扁平化嵌套数组 1.1 Array.prototype.flat 1.1.1 定义 1.1.2 语法 1.1.3 返回值 1.1.4 举例 1.1.5 注意 1.1.6 替换 1.2 Array.prototype.flatMap 1.2.1 定义 1.2.2 返回值 1.2.3 语法 1.2.4 举例 二、Object.fromEntries 2.1 定义 2.2 返回值 2.3 语法 2.4 举...
!!Array.from(document.body.getElementsByTagName('script')).filter((item) =>item.src.match(src) ).length ) useEffect(() =>{if(isLoaded)returnconstscript =document.createElement('script') script.src = src script.onload =() =>{ setLoaded(true) }document.body.append(script) }, [])if(...
Function; // 重写 function var myfun = function() { var args = Array.prototype.slice.call(arguments, 0, -1).join(","), src = arguments[arguments.length - 1]; console.log(src); console.log("=== Function end ==="); debugger; return window.__cr_fun.apply(this, arguments); } ...
tree (Node)— tree to compile file (Compatible, optional) — file associated with node; any value accepted as x in new VFile(x)ReturnsTextual representation of the tree (Uint8Array or string, see note).👉 Note: unified typically compiles by serializing: most compilers return string (or ...
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...
options.customAttribution((string | Array<string>))(default null) String or strings to show in an AttributionControl . Only applicable if options.attributionControl is true . options.doubleClickZoom(boolean)(default true) If true , the "double click to zoom" interaction is enabled (see DoubleCli...
labels:Array|Object This options lets you override the name of the listed quality levels. Tip: UsemaxQualitySelector.getLevelNames();output to find the ID to overwrite. Default:[] varplayer=videojs('my-video');// Quick and useful if only a few contiguous quality levelsvarlabelsArray=['Hi...
foo.bar or foo["bar"]) doesn't have any side effects. pure_funcs -- default null. You can pass an array of names and UglifyJS will assume that those functions do not produce side effects. DANGER: will not check if the name is redefined in scope. An example case here, for instance...
// assign (or get) a name for a cell (will overwrite any other names that cell had) worksheet.getCell('A1').name = 'PI'; expect(worksheet.getCell('A1').name).to.equal('PI'); // assign (or get) an array of names for a cell (cells can have more than one name) worksheet....
Better still, try not to execute any extra code at initial render or layout time. Move invariant expressions outside of loops Use for (…) rather than Ext.Array.each If a function performs its task conditionally and is frequently called, check the condition outside the call, and only call...