Dave HarrisonFront End Web Development Techdegree Student 7,400 Points
Use of Const & Let
I am not sure I have got my head completely around the differences between Const and Let and when to use them. In the example in this video, why did Const get used in the text.Content example and Let in the inner.HTML example?
Brett Mchatton10,279 Points
Use let for a variable that will be changing (array, numbers, inputs values). Then use const for variables that remain unchanged. (a predefined static number, a static name, some elements of the dom). The real difference between them is once you assign "bind" a value to a const you can't change it. When you use let you can reassign the variable with a new value.
In the video, Guil is using const for dom elements that stay static. Then uses let for dom elements that do not. The length of the <ul> is growing and shrinking so the value is constantly changing. The <p> is only a container so the value does not change only the content.