我如何分裂一个字符串与多个分隔符在JavaScript?
我试图拆分逗号和空格,但AFAIK JavaScript的split()函数只支持一个分隔符。
我如何分裂一个字符串与多个分隔符在JavaScript?
我试图拆分逗号和空格,但AFAIK JavaScript的split()函数只支持一个分隔符。
当前回答
我使用regexp:
str = 'Write a program that extracts from a given text all palindromes, e.g. "ABBA", "lamal", "exe".';
var strNew = str.match(/\w+/g);
// Output: ["Write", "a", "program", "that", "extracts", "from", "a", "given", "text", "all", "palindromes", "e", "g", "ABBA", "lamal", "exe"]
其他回答
不是最好的方法,但适用于使用多个和不同的分隔符/分隔符进行分割
html
<button onclick="myFunction()">Split with Multiple and Different seperators/delimiters</button>
<p id="demo"></p>
javascript
<script>
function myFunction() {
var str = "How : are | you doing : today?";
var res = str.split(' | ');
var str2 = '';
var i;
for (i = 0; i < res.length; i++) {
str2 += res[i];
if (i != res.length-1) {
str2 += ",";
}
}
var res2 = str2.split(' : ');
//you can add countless options (with or without space)
document.getElementById("demo").innerHTML = res2;
}
</script>
一个简单的方法是用每个分隔符处理字符串中的每个字符,并构建一个分隔符数组:
splix = function ()
{
u = [].slice.call(arguments); v = u.slice(1); u = u[0]; w = [u]; x = 0;
for (i = 0; i < u.length; ++i)
{
for (j = 0; j < v.length; ++j)
{
if (u.slice(i, i + v[j].length) == v[j])
{
y = w[x].split(v[j]); w[x] = y[0]; w[++x] = y[1];
};
};
};
return w;
};
console.logg = function () { document.body.innerHTML += "<br>" + [].slice.call(arguments).join(); } splix = function() { u = [].slice.call(arguments); v = u.slice(1); u = u[0]; w = [u]; x = 0; console.logg("Processing: <code>" + JSON.stringify(w) + "</code>"); for (i = 0; i < u.length; ++i) { for (j = 0; j < v.length; ++j) { console.logg("Processing: <code>[\x22" + u.slice(i, i + v[j].length) + "\x22, \x22" + v[j] + "\x22]</code>"); if (u.slice(i, i + v[j].length) == v[j]) { y = w[x].split(v[j]); w[x] = y[0]; w[++x] = y[1]; console.logg("Currently processed: " + JSON.stringify(w) + "\n"); }; }; }; console.logg("Return: <code>" + JSON.stringify(w) + "</code>"); }; setTimeout(function() { console.clear(); splix("1.23--4", ".", "--"); }, 250); @import url("http://fonts.googleapis.com/css?family=Roboto"); body {font: 20px Roboto;}
用法:splix(字符串,分隔符…) 示例:splix("1.23- 4", ".", "——") 返回:["1","23","4"]
您可以将所有想要单独或共同用作分隔符的字符合并到一个正则表达式中,并将它们传递给split函数。例如,你可以这样写:
console.log( "dasdnk asd, (naks) :d skldma".split(/[ \(,\)]+/) );
输出将是:
["dasdnk", "asd", "naks", ":d", "skldma"]
在Github上查看我的简单库
如果你真的不想访问或与repo交互,下面是工作代码:
/**
*
* @param {type} input The string input to be split
* @param {type} includeTokensInOutput If true, the tokens are retained in the splitted output.
* @param {type} tokens The tokens to be employed in splitting the original string.
* @returns {Scanner}
*/
function Scanner(input, includeTokensInOutput, tokens) {
this.input = input;
this.includeTokensInOutput = includeTokensInOutput;
this.tokens = tokens;
}
Scanner.prototype.scan = function () {
var inp = this.input;
var parse = [];
this.tokens.sort(function (a, b) {
return b.length - a.length; //ASC, For Descending order use: b - a
});
for (var i = 0; i < inp.length; i++) {
for (var j = 0; j < this.tokens.length; j++) {
var token = this.tokens[j];
var len = token.length;
if (len > 0 && i + len <= inp.length) {
var portion = inp.substring(i, i + len);
if (portion === token) {
if (i !== 0) {//avoid empty spaces
parse[parse.length] = inp.substring(0, i);
}
if (this.includeTokensInOutput) {
parse[parse.length] = token;
}
inp = inp.substring(i + len);
i = -1;
break;
}
}
}
}
if (inp.length > 0) {
parse[parse.length] = inp;
}
return parse;
};
用法很简单:
var tokens = new Scanner("ABC+DE-GHIJK+LMNOP", false , new Array('+','-')).scan();
console.log(tokens);
给:
['ABC', 'DE', 'GHIJK', 'LMNOP']
如果您希望在输出中包含分隔令牌(+和-),将false设置为true,瞧!它仍然有效。
现在的用法是:
var tokens = new Scanner("ABC+DE-GHIJK+LMNOP", true , new Array('+','-')).scan();
and
console.log(tokens);
将:
['ABC', '+', 'DE', '-', 'GHIJK', '+', 'LMNOP']
享受吧!
通过。com/或。net/分割URL
url.split(/\.com\/|\.net\//)