如何使用javascript分割单词

Question

This might be a simple question but, how do i split words... for example

a = "even, test"

I have used .split to seperate the text with space.

so the result came is like

a = "even,"
b = "test"

But, how do I remove the 'comma' here?

But in some conditions it might get "even test" and in some conditions i might get "even, test". All are dynamic, so how do i check it for both?

Thanks

Answer 1

Firstly, the split() function is not jQuery - it is pure Javascript.

Did you try doing split with a comma and a space? That would have worked just fine in your case:

var result = input.split(', ');

For more complex splits, you can use regular expression pattern matching to allow multiple commas or spaces between the two fields:

var result = input.split(/[, ]+/);

but you probably don't need to go that far in your case.

Answer 2

I think is better to use something like this:

text.match(/[a-z'\-]+/gi);

Example:

 var e=function() { var r=document.getElementById('r'); var x=document.getElementById('t').value.match(/[a-z'\\-]+/gi); for(var i=0;i<x.length;i++) { var li=document.createElement('li'); li.innerText=x[i]; r.appendChild(li); } } 

 <div style="float:right;width:18%"> <ol id="r" style="display:block;width:auto;border:1px inner;overflow:scroll;height:8em;max-height:10em;"></ol> <button onclick="e()">Extract words!</button> </div> <textarea id="t" style="width:70%;height:12em">even, test; spider-man But saying o'er what I have said before: My child is yet a stranger in the world; She hath not seen the change of fourteen years, Let two more summers wither in their pride, Ere we may think her ripe to be a bride. —Shakespeare, William. The Tragedy of Romeo and Juliet</textarea> 

Answer 3

I found a list of word separators in Sublime Text default settings. Here's how to split with it, with some Unicode support (the defined separators are not Unicode though):

{ // word_separators: ./\()"'-,;<>~!@#$%^&*|+=[]{}`~?: (32)
    function splitByWords(str = '', limit = undefined) {
        return str.split(/[-./\\()"',;<>~!@#$%^&*|+=[\]{}`~?:]/u, limit)
    }

    function reverseString(str) {
        let newString = ''
        for (let i = str.length - 1; i >= 0; i--)
            newString += str[i]
        return newString
    }

    const str = '123.x/x\\x(x)x"x\'x-x:x,789;x<x>x~x!x@x#x$x%x^x&x*x|x+x=x[x]x{x}x`x~x?456'
    console.log(splitByWords(str)) // (33) ["123", "x", "x", "x", "x", "x", "x", "x", "x", "x", "789", "x", "x", "x", "x", "x", "x", "x", "x", "x", "x", "x", "x", "x", "x", "x", "x", "x", "x", "x", "x", "x", "456"]
    console.log(splitByWords(str, 1)) // ["123"]
    console.log(splitByWords(reverseString(str), 1)) // ["654"]
}

For some reason the - has to be at the beginning, and the : at the end. Edit: you might want to add \\s (after the - ) to count whitespace as separator

Answer 4

Hej Harry

if the comma is the separator you can call split with the comma

Ex:

var newColls = myString.split(",");

and not split with space.

GL

Answer 5

a.split(',')

or

var re = /\s*,\s*/
var newA = a.split(re);

Answer 6

Just use this code:

var a = "even, test";
var words = a.split(", ");

Answer 7

I think you could do it like this:

var a= 'even,'
var newA = a.slice(0, -1)

This will remove the last char from a given string.

And to check if the string contains a comma, I would do the following:

if (a.indexOf(",") >= 0){
    //contains a comma
} else {
    //no comma
}

I am a javascript beginner, so this probably is not the best way to do it, but nevertheless it works.