How to use javascript to do simple algorithms

How to use javascript to do simple algorithms

1 Question

As we all know, whether it is Pycharm , IDLE or java , it can calculate simple algorithms, such as addition, subtraction, multiplication and division. However, in Hbuilder, javascript can also be used to calculate addition, subtraction, multiplication and division of numbers.

For example, we calculate: Assume y=5, calculate x=y+2, and display the result.

2 Methods

First, use the <p></p> tags to write the algorithm question title. Then use the <button></button> tag to create an event, and the name after onclick in the tag must be added with (). Then write a <p id=></p> to add an id to the p tag to display the answer, and the subsequent commands are identified by the id. Finally, create variables in <script></script> and use var to create variables.

3 Experimental results and discussion

Through experiments and practice, it is proved that the proposed method is effective and can solve the problem raised at the beginning.

<!DOCTYPE html>

< html >

< head >

< meta charset = "UTF-8" >

< title ></ title >

</ head >

< body >

< p >Assume y=5, calculate x=y+2, and display the result. </ p >

< button onclick = " showAnswer () " > Click here </ button >

< p id = "demo2" ></ p >

< script type = "text/javascript" >

var y = 5 ;

var x = y + 2 ;

function showAnswer (){

document .getElementById( "demo2" ).innerHTML = "x=" + x

}

</ script >

</ body >

</html
>

Conclusion:

We also need to pay attention that in the command getElementById(), when adding the name of the previous id in the brackets, you must add quotation marks, otherwise it will not be recognized as an id.

This is the end of this article on how to use javascript to do simple algorithms. For more relevant content about using javascript to do simple algorithms, please search for previous articles on 123WORDPRESS.COM or continue to browse the following related articles. I hope everyone will support 123WORDPRESS.COM in the future!

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