Jquery help to enforce maxlength on textarea?
当您添加属性 “maxlength” 时,Jquery 会为 textarea 强制执行 maxlength。 IE 不支持 Maxlength。如何调整我的代码以处理页面上的多个文本区域?目前
如果我将文本添加到任何文本区域,它们都会以相同的值倒计时。
jQuery:
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$(document).ready( function () {
maxLength = $("textarea").attr("maxlength"); $("textarea").bind("keyup change", function(){checkMaxLength(this.id, maxLength); } ) }); function checkMaxLength(textareaID, maxLength){ currentLengthInTextarea = $("#"+textareaID).val().length; if (currentLengthInTextarea > (maxLength)) { // Trim the field current length over the maxlength. } |
HTML:
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Skills: <textarea id="1" maxlength="200" rows="10" cols="60"></textarea> Postions: Comments |
这是最好的解决方案!
将其放入 HTML 代码中的脚本标签
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$("textarea[maxlength]").on("propertychange input", function() {
if (this.value.length > this.maxlength) { this.value = this.value.substring(0, this.maxlength); } }); |
现在使用
解决办法在这里:
http://web.enavu.com/daily-tip/maxlength-for-textarea-with-jquery/
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$(document).ready(function() {
$(‘textarea[maxlength]’).keyup(function(){ //check if there are more characters then allowed //and change the current text with the new text }); |
你不能用这个吗:
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class="validate[required,maxSize[50]]"
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此解决方案用作原生 HTML 文本区域,最大长度属性
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Var MaxLength=100;
$(‘#Selector’).keydown(function (e) { var text = $(this).val(); var chars = text.length; if (chars > MaxLength) { if (e.keyCode == 46 || e.keyCode == 8 || e.keyCode == 37 || e.keyCode == 38 || e.keyCode == 39 || e.keyCode == 40) { return true; } return false; } return true; }); |
Don’t set the Maxlength property in the server side control (asp:TextBox) as server won’t convert maxLength property to HTML markup when returning to your browser.
原创文章,作者:ItWorker,如若转载,请注明出处:https://blog.ytso.com/268772.html