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Editor de Texto Dinâmico

Lucas M


Eu queria saber como fazer um editor de texto com textarea e não iframe, e que que este editor fosse automático, ou seja, clicou em negrito todo o texto escrito ficasse em negrito, sem a necessidade de selecionar o texto, tem como?

        <style type="css">
        &lt;script type="text/javascript">
        /*function Iniciar() {
            editor.document.designMode = 'On';
        function fonte(fonte) {
            if(fonte != ''){
                editor.document.execCommand('fontname', false, fonte);
        function negrito() {
            editor.document.execCommand('bold', false, null);

        function italico() {
            editor.document.execCommand('italic', false, null);

        function sublinhado() {
            editor.document.execCommand('underline', false, null);
    <body onLoad="Iniciar()">
        <div align="center">
            <input type="checkbox" name="Negrito" id="bold" style="cursor:hand" value="B" onClick="negrito()" />
            <input type="checkbox" name="Italico" id="italic" style="cursor:hand" value="I" onClick="italico()" />
            <input type="checkbox" name="Sublinhado" id="underline" style="cursor:hand" value="U" onClick="sublinhado()" /> |
            <select name="fonte" onChange="fonte(this.options[this.selectedIndex].value)">
                <option value="Arial">Arial</option>
                <option value="Comic Sans MS">Comic Sans MS</option>
                <option value="Times New Roman">Times New Roman</option>
            <input type="text" id="size" onChange="fontEdit('fontsize',this[this.selectedIndex].value)" />
            <select id="color" onChange="fontEdit('ForeColor',this[this.selectedIndex].value)">
                <option style="color:black;" value="black">preto</option>
                <option style="color:red;" value="red">vermelho</option>
                <option style="color:blue;" value="blue">azul</option>
                <option style="color:green;" value="green">verde</option>
                <option style="color:pink;" value="pink">rosa</option>
            <textarea id="editor" style="width:500px; height:200px;"></textarea>

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Substitua a função negrito por esta:

function negrito() {
            editor.document.execCommand('bold', false, null);
var i=document.getElementById('editor');

Edited by MateusV.
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