ECMA International于6月30日正式批准了ECMAScript 2026，这是JavaScript编程语言规范的第17个版本。 ECMAScript 2026在数学运算、迭代器、数组、映射、编码及JSON等多个领域新增了方法和功能，具体包括以下内容。 数学运算方面，新增Math.sumPrecise方法，用于对一组不同数量级的数字进行求和，同时最大程度降低精度损失。 迭代器方面，新 ...

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The Current Radar map shows areas of current precipitation (rain, mixed, or snow). The map can be animated to show the previous one hour of radar.

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