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1. var a = 1; var b = a; a = 2; console.log(b); 1 var c = [1,2,3]; var d = c; c.shift(); console.log(d); [2,3] We know that the assignment of the basic object is a copy value, so changing a does not affect b, while the complex object assignment...
question: all values can be selected. Users can click to select multiple values. When the submit button is clicked, these values (fighting, dancing, weightlifting) are stored in an array . this is an unselected ...
such as the question: how does js determine an item in an array that contains another array? if A=[1,2,3,4,5,6]; B=[8,10,6,7,8]; how can you tell that an item in array B also exists in array A (it is best to return the sequence value of the item in B...
In vue, I want to get the value of the callback API during the getDepartmentCommon callback, but I can only get the res object during the callback, but I can t get the res.options,. Some people say that it is because my res is set, so how can I get the...