jquery - Maxlength验证不包括使用Jquery从单词粘贴的换行符或列表（空格）？

Question

我有以下 Jquery 验证将文本限制为 400 maxlength。它适用于纯文本，但从包含换行符、间距等格式的单词粘贴时似乎不起作用。=

$('textarea[maxlength]').keyup(function(){
                //get the limit from maxlength attribute
                var limit = parseInt($(this).attr('maxlength'));
                //get the current text inside the textarea
                var text = $(this).val();
                //count the number of characters in the text
                var chars = text.length;

                //check if there are more characters then allowed
                if(chars > limit){
                    //and if there are use substr to get the text before the limit
                    var new_text = text.substr(0, limit);

                    //and change the current text with the new text
                    $(this).val(new_text);
                }

Answer 1

试试这个...

function validateLength(textareaElement) {
    // your logic here, use textareaElement instead of $(this)
}
$('textarea[maxlength]').keyup(function(eventObject) {
    window.setTimeout(function() {
        validateLength($(eventObject.target));
    , 1);
});

1 毫秒的超时应该足以“逃脱 keyup 事件的内部范围”，并允许您获取 textareaElement 的正确字符串值。