.IntersectionObserver) {letitems = [...document.getElementsByClassName("item")];// parses as a true array, also available Array.prototype.slice.call()letio =newIntersectionObserver((entries)
这两个方法用于计时,可以算出一个操作所花费的准确时间。 console.time('Array initialize'); var array= new Array(1000000); for (var i = array.length - 1; i >= 0; i--) { array[i] = new Object(); }; console.timeEnd('Array initialize'); // Array initialize: 1914.481ms 1. 2. 3...
functioninitializeScript(){/// Define a visualizer class for the object.//classmyVisualizer{/// Create an ES6 generator function which yields back all the values in the array.//*[Symbol.iterator]() {varsize =this.m_size;varptr =this.m_pValues;for(vari =0; i < size; ++i) {yield...
stops SizeStop[] |null |undefinedautocast Autocasts from Object[] An array of objects that defines the mapping of data values returned from field or valueExpression to icon sizes. You must specify 2 - 6 stops. The stops must be listed in ascending order based on the value of...
你应该优先使用 dojo 的数组模块,而不是原生 JavaScript 数组函数,原因有很多。Dojo 的数组模块名为dojo/_base/array。 dojo/_base/array 正如您所期望的那样,作为数组模块的一部分,有一个称为forEach()的迭代器方法,以及indexOf()和lastIndexOf()方法。现在来看最好的部分。有一个filter()方法,它返回一个根据...
Return 28. Constant pool (size = 5) 29. 000001DAA2FA1E29: [FixedArray] in OldSpace 30....
setOffset(offset:Size):设置控件停靠的偏移量 getOffset():返回控件停靠的偏移量(size) show():显示控件 hide():隐藏控件 isVisible():判断控件的可见性(Boolean) initialize(map:Map):抽象方法。调用Map.addControl()方法添加控件时将调用此方法,从而实现该控件的初始化。自定义控件时需要实现此方法,并将元素的...
Array.prototype.in_array=function(e) { var r=new RegExp(this.S+e+this.S); return (r.test(this.S+this.join(this.S)+this.S)); } 《/script》 求javascript 字符串压缩算法 《HTML》 《HEAD》 《TITLE》Decision Helper《/TITLE》
Iterate over array elements or object key-value pairs. Returning false from the iterator function stops the iteration. $.each(['a', 'b', 'c'], function(index, item){ console.log('item %d is: %s', index, item) }) var hash = { name: 'zepto.js', size: 'micro' } $.each(hash...
postInitialize() Inherited from Widget Executes after widget is ready for rendering. removeHandles Inherited Method removeHandles(groupKey) Inherited from Accessor Since: ArcGIS Maps SDK for JavaScript 4.25 Removes a group of handles owned by the object. Parameter groupKey * optional A ...