JS implements the rock-paper-scissors game

JS implements the rock-paper-scissors game

This article example shares the specific code of JS to implement the rock-paper-scissors game for your reference. The specific content is as follows

1. Simple version of rock-paper-scissors game

Write a rock-paper-scissors game between the user and the computer. The user inputs scissors, rock, or paper, and the input is compared with the computer's punch to determine the winner.

analyze:

1. First, use the prompt() method to create a user input box;
2. The core is to use the Math.random() function, which takes a random number between [0,1). This function can be used to make the computer punch randomly;
3. Use if-else statements to determine the various results that may occur and make decisions;

The specific code is as follows:

/**
 * a is the content entered by the user * b is the random content of the computer */
var a = prompt('Please enter 1: Scissors 2: Rock 3: Paper');
var b = Math.random();
if (b < 0.3) {
    if (a == 1) {
        alert('The computer made the scissors, you made the scissors, it's a tie');
    } else if (a == 2) {
        alert('The computer played scissors, you played rock, you lose');
    } else {
        alert('The computer played scissors, you played cloth, you win');
    }
} else if (b < 0.6) {
    if (a == 1) {
        alert('The computer played rock, you played scissors, you lose');
    } else if (a == 2) {
        alert('The computer's stone and your stone are tied');
    } else {
        alert('The computer played rock, you played paper, you win');
    }
} else {
    if (a == 1) {
        alert('The computer played paper, you played scissors, you win');
    } else if (a == 2) {
        alert('The computer played paper, you played stone, you lost');
    } else {
        alert('The computer made the cloth, you made the cloth, it's a tie');
    }
}

2. Advanced version of rock-paper-scissors game

Record the system and player scores, the winner will get 1 point, and the draw and loser will not get any points.

analyze:

1. Two more variables need to be added to the original code, one to store the user's total score and the other to store the computer's total score;
2. A for loop is needed to limit the number of games;
3. Use the alert() statement to output the result score;

The specific code is as follows:

var sum=0;//people's scorevar snm=0;//computer's scorefor(var i=0;i<3;i++){
    var a=prompt('Please enter 1, scissors 2, rock 3, cloth');
    var b=Math.random();
    if (b < 0.3) {
        if (a == 1) {
            alert('The computer made the scissors, you made the scissors, it's a tie');
        } else if (a == 2) {
            snm++;
            alert('The computer played scissors, you played rock, you lose');
        } else {
            sum++;
            alert('The computer played scissors, you played cloth, you win');
        }
    } else if (b < 0.6) {
        if (a == 1) {
            snm++;
            alert('The computer played rock, you played scissors, you lose');
        } else if (a == 2) {
            alert('The computer's stone and your stone are tied');
        } else {
            sum++;
            alert('The computer played rock, you played paper, you win');
        }
    } else {
        if (a == 1) {
            sum++;
            alert('The computer played paper, you played scissors, you win');
        } else if (a == 2) {
            snm++;
            alert('The computer played paper, you played stone, you lost');
        } else {
            alert('The computer made the cloth, you made the cloth, it's a tie');
        }
    }
}
alert('computer'+snm +'your score'+sum);

The above is the full content of this article. I hope it will be helpful for everyone’s study. I also hope that everyone will support 123WORDPRESS.COM.

You may also be interested in:
  • Writing a rock-paper-scissors game in JavaScript
  • JavaScript based on object-oriented implementation of the rock-paper-scissors game
  • js implements the rock-paper-scissors game
  • JavaScript implementation of the rock-paper-scissors game source code sharing
  • HTML+JS to implement the sample code of rock-paper-scissors game

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