上传者: 38656364
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上传时间: 2022-07-22 22:12:57
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文件大小: 50KB
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文件类型: PDF
代码如下: Ext.applyIf(Array.prototype, { /** * Checks whether or not the specified object exists in the array. * @param {Object} o The object to check for * @param {Number} from (Optional) The index at which to begin the search * @return {Number} The index of o in the array (or -1 if it is not found) */