functionappend(array, toAppend){constarrayCopy =array.slice();if(toAppend.first) {arrayCopy.unshift(toAppend.first);}if(toAppend.last) {arrayCopy.push(toAppend.last);}returnarrayCopy;}append([2,3,4], { first:1, last:5});// => [1, 2, ...
isEmptyArrayLikeObject( value ): test if a value is an empty array-like object. isEmptyArray( value ): test if a value is an empty array. isEqualArray( v1, v2 ): test if two arguments are both generic arrays and have equal values. isFalsyArray( value ): test if a value is an...
function append(array, toAppend) { const arrayCopy = array.slice(); if ('first' in toAppend) { arrayCopy.unshift(toAppend.first); } if ('last' in toAppend) { arrayCopy.push(toAppend.last); } return arrayCopy; } append([2, 3, 4], { first: 1, last: 5 }); // => [1, ...
When a value is given, sets the property to that value on each element of the collection. Multiple properties can be retrieved at once by passing an array of property names. Multiple properties can be set by passing an object to the method. When a value for a property is blank (empty ...
An inverted section opens with{{^section}}instead of{{#section}}. The block of an inverted section is rendered only if the value of that section's tag isnull,undefined,false,falsyor an empty list. View: {"repos": [] } Template: ...
console.log(moe==clone);=>falseconsole.log(_.isEqual(moe, clone));=>true 判断对象类型的方法,下面反回值都是true console.log(_.isEmpty({})); console.log(_.isArray([1,2,3])); console.log(_.isObject({})); console.log((function(){return_.isArguments(arguments); })(1, 2, 3)...
eslint: array-callback-return // good [1, 2, 3].map((x) => { const y = x + 1; return x * y; }); // good [1, 2, 3].map(x => x + 1); // bad - 没有返回值,意味着在第一次迭代后 `acc` 没有被定义 [[0, 1], [2, 3], [4, 5]].reduce((acc, item, ...
maxFileSizeErrorCallback(file, errorCount) A function which displays an error a selected file is larger than allowed. (Default: displays an alert for every bad file.) fileType The file types allowed to upload. An empty array allow any file type. (Default: []) fileTypeErrorCallback(file, ...
TheJSON.stringify(..)utility will automatically omitundefined,function, andsymbolvalues when it comes across them. If such a value is found in anarray, that value is replaced bynull(so that the array position information isn’t altered). If found as a property of anobject, that property wil...
[Object3d,strorfn])Node object accessor function or attribute for generating a custom 3d object to render as graph nodes. Should return an instance ofThreeJS Object3d. If afalsyvalue is returned, the default 3d object type will be used instead for that node.default node object is a sphere...