JavaScript TypeError – ‘X’ is not iterable
This JavaScript exception is not iterable occurs if the value present at the right-hand-side of for…of or as argument of a function such as Promise.all or TypedArray.from, can not be iterated or is not an iterable object.
Message:
TypeError: 'x' is not iterable (Firefox, Chrome) TypeError: 'x' is not a function or its return value is not iterable (Chrome)
Error Type:
TypeError
Cause of Error: Somewhere in the code, the value present at the right-hand-side of for…of or as argument of a function such as Promise.all or TypedArray.from, is used like it can be iterated or is an iterable object.
Example 1: In this example, the GFG_Obj is not iterable, So the error has occurred.
HTML
< script > var GFG_Obj = { 'prop1': 'val1', 'prop2': 'val2' }; // TypeError: GFG_Obj is not iterable for (let x of GFG_Obj) { // Do Anything. } </ script > |
Output(in console):
TypeError: GFG_Obj is not iterable
Example 2: In this example, the GFG is not iterable, So the error has occurred.
HTML
< script > function* GFG(a, b) { yield a; yield b; } // TypeError: GFG is not iterable for (let y of GFG) console.log(x); </ script > |
Output(in console):
TypeError: GFG is not iterable