我如何设置字符限制为100个而不分裂单词？
我如何设置字符限制为100个而不分裂单词？
提问于 2014-10-22 12:08:15
我想每100个字符剪一根线而不切单词。
var TmpArray=[];
var str = 'this string will be cut up after every 100 characters but it will cut into words';
str=str.replace(/[^a-z A-Z0-9]+/g, '');
str = str.replace(/\s{2,}/g, ' ');
var sp=(str.match(new RegExp(" ", "g")) || []).length;
var max=100;
//Spaces will be converted into %20 (later) so each space must count as 3 characters.
var FoundSpaces=sp*3;
var tmp=max-FoundSpaces;
var cut=str.match(new RegExp('.{1,'+tmp+'}', 'g'));
for (i = 0; i < cut.length; i++){
TmpArray.push(cut[i]);
}
console.log(TmpArray);输出：["this string will be cut up after every 100 characters b", "ut it will cut into words"]
那么，我怎样才能阻止它像它那样分裂单词呢？
Stack Overflow用户
回答已采纳
发布于 2014-10-22 12:21:09
有趣的问题。我将再提出一个如何使用数组方法的实现，即split + reduce的组合
var str = 'This example of the string that we want to split by spaces only making sure that individual chunk is less or equal to specified number.';
// Split by spaces
str.split(/\s+/)
// Then join words so that each string section is less then 40
.reduce(function(prev, curr) {
if (prev.length && (prev[prev.length - 1] + ' ' + curr).length <= 40) {
prev[prev.length - 1] += ' ' + curr;
}
else {
prev.push(curr);
}
return prev;
}, [])
// Print for testting
.forEach(function(str) {
console.log(str + ' ' + str.length);
});
在这个例子中，我设置了40个字符的最大长度。
输出：
This example of the string that we want 39
to split by spaces only making sure that 40
individual chunk is less or equal to 36
specified number. 17另一个演示：http://jsfiddle.net/9tgo6n1t/
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原文链接：
https://stackoverflow.com/questions/26507116
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