p5.js | saveStrings()函数
saveStrings()函数用于将每个字符串一行一行的字符串数组写入文件。文件的保存将因网络浏览器而异。
句法:
saveStrings( list, filename, extension )
参数:此函数接受三个参数,如上所述,如下所述:
- list:它是必须写入文件的字符串数组。
- 文件名:它指定用作保存文件的文件名的字符串。
- 扩展名:它指定用作保存文件扩展名的字符串。它是一个可选参数。
以下示例说明了 p5.js 中的saveStrings()函数:
示例 1:
function setup() {
createCanvas(600, 300);
textSize(22);
// Create a textarea for
// the input of text
inputArea = createElement('textarea');
inputArea.position(30, 50)
inputArea.size(400, 120);
// Create a button for saving text
saveBtn = createButton("Save text");
saveBtn.position(30, 200)
saveBtn.mousePressed(saveFile);
}
function draw() {
clear();
text("Click on the button below to "
+ "save the written text", 20, 20);
}
function saveFile() {
// Get the value of the textarea
// and split the strings on the basis
// of the nextline character
stringList = inputArea.value().split("\n");
// Save the strings to file
saveStrings(stringList, 'output.txt');
}
输出:
示例 2:
function setup() {
createCanvas(600, 300);
textSize(18);
// Create both inputs for the
// multiplication table
multiOf = createInput();
multiOf.position(250, 50)
multiOf.size(50);
multiTo = createInput();
multiTo.position(250, 90)
multiTo.size(50);
// Create a button for saving text
saveBtn = createButton(
"Generate and save table");
saveBtn.position(30, 140)
saveBtn.mousePressed(saveFile);
}
function draw() {
clear();
text("Fill in the input to generate "
+ "a multiplication table:", 20, 20);
text("Multiplication table of:", 20, 60);
text("Multiplication table upto:", 20, 100);
}
function saveFile() {
// Get the value of the two inputs
// and generate table
let mul = multiOf.value();
let maxUpto = multiTo.value();
let stringList = [];
for (let i = 0; i < maxUpto; i++) {
stringList[i] = mul + " * "
+ i + " = " + mul * i;
}
// Save the strings to file
saveStrings(stringList, 'output.txt');
}
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/saveStrings