2019-04-25 · Array.isArray(obj) Here, obj is any valid object in JavaScript like map, list, array, string, etc. Return Value: It returns Boolean value true if the object passed is an array or false if the object passed is not an array. Example 1: This example uses Array.isArray() function to check the object is array or not.
isArray. A Boolean value that indicates whether the instance is a JavaScript array value. Availability. iOS 9.0+; macOS 10.11+; Mac Catalyst 13.0+; tvOS 9.0+.
But, JavaScript arrays are best described as arrays. Arrays use numbers to access its "elements". In this example, person[0] returns John: If you use jQuery you can use jQuery.isArray(obj) or $.isArray(obj). If you use underscore you can use _.isArray(obj) . If you don't need to detect arrays created in different frames you can also just use instanceof : Array.isArray() 用于确定传递的值是否是一个 Array。 Array. isArray ([1, 2, 3]); // true Array.
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"undefined") {; if (array.isarray (obj)) {; xml +=parsearraytoxml (obj, rootname); isArray(b)&&b.length)c.each(b,function(f,h){d||Ra.test(a)?e(a,h):da(a+"["+(typeof h==="object"||c. createElement("script");v.type="text/javascript";if(b.support. JS.("(" JsonString ")"); catch {; MsgBox, Wrong JsonString! Return; }; Return this._CreateObject(oJSON); }; Stringify(obj) {; if IsObject( obj ) {; isArray := true; for key isArray(d),f=0,d=e?d:d[typeof Symbol==="function"?Symbol.iterator:"@@iterator"]();;){var h;if(e){if(f>=d.length)break;h=d[f++]}else{f=d.next();if(f.done)break