javascript - MaxLength in Codemirror -


hi there way set maxlength of characters in codemirror v5.5.0. have tried following:

code:

cmutils.enforcemaxlength = function(cm, change) {     var maxlength = cm.getoption("maxlength");     if (maxlength && change.update) {         var str = change.text.join("\n");         var delta = str.length-(cm.indexfrompos(change.to) - cm.indexfrompos(change.from));         if (delta <= 0) { return true; }         delta = cm.getvalue().length+delta-maxlength;         if (delta > 0) {             str = str.substr(0, str.length-delta);             change.update(change.from, change.to, str.split("\n"));         }     }     return true; }  html_editor.on("beforechange", cmutils.enforcemaxlength); css_editor.on("beforechange", cmutils.enforcemaxlength); js_editor.on("beforechange", cmutils.enforcemaxlength);

but doesn't work

p.s have written maxlength in code

var html_editor = codemirror.fromtextarea(document.getelementbyid("html"), {     linenumbers: true,     indentwithtabs: false,     indentunit: 2,     autoclosetags: true,     theme: 'dracula',     maxlenght: 25,     mode: {         htmlmode: true,         name: "xml"     } });

update 1 console says cmutils isn't defined. how define it?

i cmutils gskinner created own work. there few ways use function, depending on how want function scoped.

the way written can work if following added beforehand:

window.cmutils = window.cmutils || {};  cmutils.enforcemaxlength = function(cm, change) { //.....

alternatively, keep function private, replace first line with:

var enforcemaxlength = function(cm, change) {

don't forget set option "maxlength" on codemirror editor


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