p5.js |修剪（）函数

p5.js 中的trim()函数用于从输入 String 的开头和结尾删除空格字符和制表符。此函数还用于删除回车符和 Unicode “nbsp”字符。

句法：

trim(Strings)

或者

trim(Array_of_Strings)

参数：此函数接受参数String或要修剪的array_of_strings 。

返回值：返回修剪后的字符串。

下面的程序说明了 p5.js 中的 trim()函数。
示例 1：此示例使用trim()函数从字符串的开头和结尾删除空白字符。

function setup() {
  
    // Creating Canvas size
    createCanvas(450, 120);
}
  
function draw() {
  
    // Set the background color 
    background(220);
  
    // Initializing the Strings and Array of strings
    let String = " Geeks ";
    let Array1 = [" 1 ", " 2 ", " 3 "];
    let Array2 = [" a ", " A ", " b ", " B "];
  
    // Calling to trim() function.
    let A = trim(String);
    let B = trim(Array1);
    let C = trim(Array2);
  
    // Set the size of text 
    textSize(16);
  
    // Set the text color 
    fill(color('red'));
  
    // Getting trimed strings
    text("Trimmed string is: " + A, 50, 30);
    text("Trimmed strings are: " + B, 50, 60);
    text("Trimmed strings are: " + C, 50, 90);
}

输出：

示例 2：此示例使用trim()函数从字符串的开头和结尾删除制表符。

function setup() {
  
    // Creating Canvas size
    createCanvas(450, 120);
}
  
function draw() {
  
    // Set the background color 
    background(220);
  
    // Initializing the Strings and Array of strings
    let String = "  GeeksforGeeks  ";
    let Array1 = ["  5  ", "  6  ", "  7  "];
    let Array2 = ["  Delhi  ",
                  "  Mumbai  ",
                  "  Kolkata  ",
                  "  Patna  "];
  
    // Calling to trim() function.
    let A = trim(String);
    let B = trim(Array1);
    let C = trim(Array2);
  
    // Set the size of text 
    textSize(16);
  
    // Set the text color 
    fill(color('red'));
  
    // Getting trimed strings
    text("Trimmed string is: " + A, 50, 30);
    text("Trimmed strings are: " + B, 50, 60);
    text("Trimmed strings are: " + C, 50, 90);
  
}

输出：

参考： https://p5js.org/reference/#/p5/trim