p5.js NumberDict maxValue() 方法
p5.js 中 p5.NumberDict 的maxValue()方法用于查找数字字典中的最大值。一个数字字典可以存储多个键值对。
句法:
maxValue()
参数:此方法不接受任何参数。
返回值:它返回一个数字值,它是字典中的最大值。
下面的例子说明了 p5.js 中的maxValue() 方法:
例子:
Javascript
function setup() {
createCanvas(550, 300);
textSize(16);
text("Click on the button to create a new " +
"dictionary and get the highest value",
20, 20);
setBtn =
createButton("Create random dictionary");
setBtn.position(30, 40);
setBtn.mouseClicked(createNewDict);
getBtn =
createButton("Get highest Value");
getBtn.position(300, 40);
getBtn.mouseClicked(getHighestValue);
}
function createNewDict() {
clear();
// Create an object with random values
let obj = {};
for (let i = 0; i < 5; i++) {
let rk = ceil(Math.random() * 100);
let rn = floor(Math.random() * 100);
rn = (rk > 25) ? rn : -rn;
obj[rk] = rn;
text("Key: " + rk + " : Value: " +
rn, 40, 120 + 20 * i);
}
// Create a dictionary using the above values
numDict = createNumberDict(obj);
text("New Dictionary created with values",
20, 80);
text("Click on the button to create a new " +
"dictionary and get the highest value",
20, 20);
}
function getHighestValue() {
// Get the highest value in the dictionary
let highestVal = numDict.maxValue();
// Display the highest value
text("The highest value in the dictionary is: " +
highestVal, 20, 240);
text("Click on the button to create a new " +
"dictionary and get the highest value",
20, 20);
}
输出:
在线编辑器: https://editor.p5js.org/
环境设置: https://www.geeksforgeeks.org/p5-js-soundfile-object-installation-and-methods/
参考: https://p5js.org/reference/#/p5.NumberDict/maxValue