jQuery使用"count"而不是“切片" [英] Jquery use "count" instead of "slice"

问题描述

我的代码应该在x个单词之后放置一个横幅.该代码正在运行，但不能正常运行，因为它正在使用slice进行计数或切片. 我需要使用(count >= 20)而不是slice(0, 20)

My code is supposed to place a banner after x amount of words. The code is working, but not as it should, as it is using slice to make the counting or slicing. I need to use (count >= 20) instead of slice(0, 20)

这样，将对文本中的单词进行计数，而不是对行数进行计数. 这是满足我需要的代码: https://jsfiddle.net/714Lmgfu/3/ 但是，此代码中存在一个循环，该循环可以复制图像(如小提琴中所示)，而我无法使return false正常工作.

This way the words in the text will be counted, instead counting the lines. This is the code that does what I need: https://jsfiddle.net/714Lmgfu/3/ However, there is a loop in this code, which replicates the image (As show in the Fiddle) and I was not able to make return false working.

所以我得到了一些帮助，这是最终结果 https://jsfiddle.net/scadp0ar/ ，此代码按应有的方式工作，除了如上所述，它不计算单词数.我应该怎么做才能使它计入单词数?

So I got some help and this was the final result https://jsfiddle.net/scadp0ar/, this code is working the way it should, except that, as stated before, it doesn't count the words. What should I change to make it count the words instead?

例如，更改:

  var img = '<img src="http://blog.leadlovers.com.br/wp-content/uploads/sites/23/2014/03/marca21-160x160.png" />'

    $(".newsitem_text").html(function (i, h) {
        return h.replace(h.split(/\s+/).slice(0, 20).join(' '), function (m) {
            return m + img; });
            });

针对:

function check() {
    if (count >= 20) {
newHtml += '<img src="http://blog.leadlovers.com.br/wp-content/uploads/sites/23/2014/03/marca21-160x160.png" />'     
    count = 0;
    }
  }

推荐答案

var img = '<img src="http://blog.leadlovers.com.br/wp-content/uploads/sites/23/2014/03/marca21-160x160.png" />'

$(".newsitem_text").html(function (i, h) {
    // Match a word followed by one or more spaces 20 times
    //   Insert <img>-tag
    //   Repeat
    return h.replace(/([^\s]+\s+){20}/g, function (m) {
        return m + img;
    });
});

故障:

/ # Start regex
  ( # Start capturing group
    [^\s]+ # Match everything - but space - 1 or more times
           #   could also be written as .+? that means:
           #      match everything 1 or more times, but not gready (meaning that if a space is encountered it will stop matching)
    \s+ # Match space 1 or more times
  ) # End group
  {20} # repeat 20 times
/ # End regex
g # global flag - will run the regex multiply times until no more matches are posible

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