TinyMCE文本编辑器最大字符限制

TinyMCE text editor max char limit

本文关键字：字符 文本 文本编辑 编辑器 TinyMCE      更新时间：2023-09-26

我将TinyMCE用于<textarea>。我的要求是将字符大小限制为2000，并在工具栏下方的某个位置显示其余字符。我设法弄到了字符数；现在我只能显示剩下的字符，防止超过限制。

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){

        } 
        });
    }
});

为了测试的目的，我试图限制最多10个字符
欢迎提出任何建议。

我建议您在KeyDown上执行代码，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;
      }

我遇到了同样的问题，发现这个链接非常有用：http://www.ryann.ca/?p=186

尽管我稍微更改了一下，以便它直接从文本区域读取maxlength的属性。

tinyMCE.init({
    // Options
    setup : function(ed) {
        ed.onKeyUp.add(function(ed, e) {
            var tinylen, htmlcount, maxlength = $("#" + tinyMCE.activeEditor.id).attr("maxlength");
            if (maxlength) {
                // grabbing the length of the curent editors content
                tinylen = ed.getContent().length;
                htmlcount = "HTML Character Count: " + tinylen + "/" + maxlength;
                if (tinylen > maxlength) {
                    htmlcount = "<span style='font-weight:bold; color: #f00;'>" + htmlcount + "</span>";
                }
                // write the html count into the path row of the active editor
                tinymce.DOM.setHTML(tinymce.DOM.get(tinyMCE.activeEditor.id+ '_path_row'), htmlcount);
            }
        });//ed.onKeyUp.add
    }//setup
});

希望它能起作用：）

setup: function(ed) {            
            var maxlength = parseInt($('#'+(ed.id)).attr("maxlength"));
            var count = 0;
            ed.on('keydown', function(e) {
                count++;
                if (count >= maxlength)
                {
                    alert("false");
                    return false;
                }
            });
        },
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