javascript 如何计算没有空格的字符数？
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How to count the number of characters without spaces?
提问by user3096253
I'm new to this, so please understand me;/
我是新手，所以请理解我；/
I'm creating an app in appery.io and it has to count the number of letters of text inserted by the app user(without spaces).
我正在 appery.io 中创建一个应用程序，它必须计算应用程序用户插入的文本字母的数量（没有空格）。
I have an input field created(input), a button to press and show the result in a label(result)
我创建了一个输入字段（输入），一个按钮来按下并在标签中显示结果（结果）
the code for the button:
按钮的代码：
var myString = getElementById("input");
var length = myString.length;
Apperyio('result').text(length);
Can you please tell me what is wrong?
你能告诉我有什么问题吗？
回答by SReject
To ignore a literal space, you can use regex with a space:
要忽略文字空间，您可以使用带有空格的正则表达式：
// get the string
let myString = getElementById("input").value;
// use / /g to remove all spaces from the string
let remText = myString.replace(/ /g, "");
// get the length of the string after removal
let length = remText.length;
To ignore all white space(new lines, spaces, tabs) use the \s quantifier:
要忽略所有空格（新行、空格、制表符），请使用 \s 量词：
// get the string
let myString = getElementById("input").value;
// use the \s quantifier to remove all white space
let remText = myString.replace(/\s/g, "")
// get the length of the string after removal
let length = remText.length;
回答by Harutyun Abgaryan
Use this:
用这个：
var myString = getElementById("input").value;
var withoutSpace = myString.replace(/ /g,"");
var length = withoutSpace.length;
回答by Hemant Nagarkoti
You can count white spaces and subtract it from lenght of string for example
例如，您可以计算空格并从字符串的长度中减去它
var my_string = "John Doe's iPhone6";
var spaceCount = (my_string.split(" ").length - 1);
console.log(spaceCount);
console.log('total count:- ', my_string.length - spaceCount)
