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+{
+ "title":"maxlength attribute for input and textarea elements",
+ "description":"Declares an upper bound on the number of characters the user can input. Normally the UI ignores attempts by the user to type in additional characters beyond this limit.",
+ "spec":"https://html.spec.whatwg.org/multipage/forms.html#attr-input-maxlength",
+ "status":"ls",
+ "links":[
+ {
+ "url":"https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input#attr-maxlength",
+ "title":"MDN Web Docs - attribute maxlength"
+ }
+ ],
+ "bugs":[
+ {
+ "description":"In Opera 12.1 & below `ValidityState.tooLong` is true when the input's initial value exceeds the maxlength. Per the spec, it should instead be false until the user edits the value."
+ }
+ ],
+ "categories":[
+ "DOM",
+ "HTML5",
+ "JS API"
+ ],
+ "stats":{
+ "ie":{
+ "5.5":"u",
+ "6":"a #1 #2 #3",
+ "7":"a #1 #2 #3",
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+ "9":"a #1 #2 #3",
+ "10":"y",
+ "11":"y"
+ },
+ "edge":{
+ "12":"y #4",
+ "13":"y #4",
+ "14":"y #4",
+ "15":"y #4",
+ "16":"y #4",
+ "17":"y #4",
+ "18":"y #4"
+ },
+ "firefox":{
+ "2":"a #1 #2 #3",
+ "3":"a #1 #2 #3",
+ "3.5":"a #1 #2 #3",
+ "3.6":"a #1 #2 #3",
+ "4":"y #4",
+ "5":"y #4",
+ "6":"y #4",
+ "7":"y #4",
+ "8":"y #4",
+ "9":"y #4",
+ "10":"y #4",
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+ "40":"y #4",
+ "41":"y #4",
+ "42":"y #4",
+ "43":"y #4",
+ "44":"y #4",
+ "45":"y #4",
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+ },
+ "chrome":{
+ "4":"y",
+ "5":"y",
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+ "opera":{
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+ "11.0-11.2":"y",
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+ "12":"y"
+ },
+ "op_mini":{
+ "all":"a #1"
+ },
+ "android":{
+ "2.1":"u",
+ "2.2":"u",
+ "2.3":"y",
+ "3":"y",
+ "4":"y",
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+ "4.2-4.3":"y",
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+ "67":"y #6"
+ },
+ "bb":{
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+ },
+ "op_mob":{
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+ },
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+ },
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+ "samsung":{
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+ },
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+ },
+ "baidu":{
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+ }
+ },
+ "notes":"",
+ "notes_by_num":{
+ "1":"`<textarea>`'s' UI does not prevent the user from typing additional characters beyond the `maxlength` limit.",
+ "2":"Does not support the `HTMLTextAreaElement.maxLength` DOM property.",
+ "3":"Does not support [`ValidityState.tooLong`](https://developer.mozilla.org/en-US/docs/Web/API/ValidityState/tooLong). In some cases, this is because `.validity` is not supported in the first place.",
+ "4":"Does not support `ValidityState.tooLong` correctly in the (unlikely) case of the value being initially set too long, then changed by the user to a still incorrect state. See [Firefox bug](https://bugzilla.mozilla.org/show_bug.cgi?id=1203844) and [MS Edge bug](https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/4678527/).",
+ "5":"`<input>`'s UI does not prevent the user from typing additional characters beyond the `maxlength` limit between two existing characters of the string.",
+ "6":"Allows text beyond maxlength to be entered at first, but removes all characters past the maxlength when focus is lost."
+ },
+ "usage_perc_y":93.33,
+ "usage_perc_a":2.72,
+ "ucprefix":false,
+ "parent":"form-validation",
+ "keywords":"maximum,length,input,textarea,too,long,validity,state",
+ "ie_id":"",
+ "chrome_id":"",
+ "firefox_id":"",
+ "webkit_id":"",
+ "shown":true
+}
generated by cgit v1.2.3 (git 2.25.1) at 2026-10-10 08:00:00 +0000