javascript - TinyMCE 文本编辑器最大字符限制

Question

我正在为 <textarea> 使用 TinyMCE .我的要求是将字符大小限制为 2000，并在工具栏下方某处显示剩余字符。我以某种方式设法获得了字符编号；现在我只能显示剩余的字符并防止超出限制。

这是我的 TinyMCE 代码

tinyMCE.init({
    // General options
    mode : "textareas",
    theme : "simple",
    plugins : "autolink,lists,pagebreak,style,table,save,advhr,advimage,
               advlink,emotions,media,noneditable,visualchars,nonbreaking,
               xhtmlxtras,template",

    // Theme options
    theme_advanced_buttons1 : "bold,italic,underline,strikethrough,|,
                               justifyleft,justifycenter,justifyright,
                               justifyfull,|,styleselect,formatselect,
                               fontselect,fontsizeselect", 
    theme_advanced_buttons2 : "bullist,numlist,|,outdent,indent,|,undo,redo,|,
                               link,unlink,anchor,image,code,|,forecolor,
                               backcolor",
    theme_advanced_toolbar_location : "top",
    theme_advanced_toolbar_align : "left",
    theme_advanced_statusbar_location : "bottom",
    theme_advanced_resizing : true,
    charLimit : 10, // this is a default value which can get modified later
    setup : function(ed) {
        //peform this action every time a key is pressed
        ed.onKeyUp.add(function(ed, e) {
        //define local variables
        var tinymax, tinylen, htmlcount;
        //manually setting our max character limit
        tinymax = ed.settings.charLimit;
        //grabbing the length of the curent editors content
        tinylen = ed.getContent().replace(/(<([^>]+)>)/ig,"").length;
        //setting up the text string that will display in the path area
        htmlcount = "HTML Character Count: " + tinylen + "/" + tinymax;
        //if the user has exceeded the max turn the path bar red.
        if (tinylen>tinymax){


        } 
        });
    }
});

出于测试目的，我试图限制最多 10 个字符。
欢迎提出任何建议。

Answer 1

我建议你在 KeyDown 上执行你的代码，因为在 KeyUp 上字母已经在编辑器中了。

    //peform this action every time a key is pressed
    ed.onKeyDown.add(function(ed, e) {

      //define local variables
      var tinymax, tinylen, htmlcount;

      //manually setting our max character limit
      tinymax = ed.settings.charLimit;

      //grabbing the length of the curent editors content
      tinylen = ed.getContent().replace(/(<([^>]+)>)/ig,"").length;

      //setting up the text string that will display in the path area
      htmlcount = "HTML Character Count: " + tinylen + "/" + tinymax;

      //if the user has exceeded the max turn the path bar red.
      if (tinylen > tinymax){

        // place text string in path bar
        if ( $('#max_char_string').size() ){
          $('#max_char_string').html( '&nbsp;' + htmlcount);
        }
        else {
          $("div#"+ed.id+"_path_row").append('<span id="max_char_string">&nbsp;'+htmlcount+'</span>')
        }

        // prevent insertion of typed character
        e.preventDefault();
        e.stopPropagation();
        return false;
      }