jQuery函数，用于在粘贴文本时限制基于单词计数的文本输入 [英] jQuery function to limit text entry based on word-count not working while pasting text

问题描述

这是jquery代码

var max_count = 200;
$(document).ready(function () {
var wordCounts = {};
$("#word_count").keyup(function () {
    var matches = this.value.match(/\b/g);
    wordCounts[this.id] = matches ? matches.length / 2 : 0;
    var finalCount = 0;
    $.each(wordCounts, function (k, v) {
        finalCount += v;
    });
    var vl = this.value;
    if (finalCount > max_count) {
        vl = vl.substring(0, vl.length - 1);
        this.value = vl;
    }
    var countleft = parseInt(max_count - finalCount);

    $('#display_count').html(finalCount);
    $('#count_left').html(countleft);
    am_cal(finalCount);
}).keyup();
});

此代码的工作是计算单词数量并限制它们上升200.

The work of this code is to count the number of words and limit them going up 200.

当我们输入textarea它工作正常，它很重要，当它达到200时它不允许写更多，但当我复制粘贴代码时，它继续200以上，我怎么能纠正这个？

When we type in the textarea it works fine, and it counts and when it reaches 200 it does not allow to write more, but when i copy paste the code, it keeps going above 200, how can i correct this?

这里是小提琴

http://jsfiddle.net/aVd4H/

提前致谢

推荐答案

首先，您的代码更正已更新 这里

First of all, your code correction is being updated here

和 这里 是一个关于复制粘贴的字数限制的演示，您可以将其集成到您的代码中。

and here is a demo for word limit on copy paste you can integrate it in your code.

jQuery(document).ready(function($) {

    function limits(obj, limit){

        var text = $(obj).val(); 
        var length = text.length;

        if(length > limit){
            $(obj).val(text.substr(0,limit));
        } else {
            /**
             * Alerts the user of the remaining characters.
             * I do alert here, but you can do any other thing you like.
             */
            alert(limit - length + " characters remaining!");
        }
    }

    $('textarea').keyup(function() {
        limits($(this), 20);
    });
});

您的完整代码根据您的要求 HERE

your complete code according to your requirement HERE

最后调用你的am_cal（）函数。

call your am_cal() function at the end.

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