below, there is a method that accepts four parameters x y k j. Where the default value of k j is 1, 2
get: function (x, y, k = 1, j = 2){}you can call
when you want to omit the last two parameters.this.get(1,2) now if I just want to omit the third parameter, what should I write?
it seems impossible to know which parameter has been omitted in this way
this.get(1,2,3)this.get(1,2,undefined,3) it is recommended to write as follows
get: function ({x,y,k = 1, j= 2} = {}){}this.get({x:1,y:2,j:3})pass an object, the code is more readable, and the parameters are more free
function test (params) {
let x = params.x || 'default'
let y = params.y || 'default'
let z = params.z || 'default'
}
test({
x: 1,
z: 3
})es6 can also deconstruct assignment
this.get
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