editor de texto, fiz o gerador de markdown

javascript/escrever.js

@@ -0,0 +1,63 @@
+function setText(textarea, text, inicio, fim, _in) {
+  textarea.value = text;
+  textarea.selectionStart = inicio + _in.length;
+  textarea.selectionEnd = fim + _in.length;
+  textarea.focus();
+}
+
+$(function () {
+  function editText(textarea, _in, _out) {
+    let inicio = textarea.selectionStart;
+    let fim = textarea.selectionEnd;
+    let valor = textarea.value;
+
+    switch (inicio === fim) {
+      case true:
+        setText(
+          textarea,
+          valor.slice(0, inicio) + _in + "texto aqui" + _out + valor.slice(fim),
+          inicio,
+          fim,
+          _in,
+        );
+        break;
+      default:
+        setText(
+          textarea,
+          valor.slice(0, inicio) +
+            _in +
+            valor.slice(inicio, fim) +
+            _out +
+            valor.slice(fim),
+          inicio,
+          fim,
+          _in,
+        );
+
+        break;
+    }
+  }
+
+  $("#text-write ul span").on("click", function () {
+    let list = [
+      { start: "# ", end: "" },
+      { start: "## ", end: "" },
+      { start: "### ", end: "" },
+      { start: "**", end: "**" },
+      { start: "_", end: "_" },
+      {
+        addImg: function () {
+          editText($("#edit")[0], "[[img]{},'", "',size,100,100]");
+        },
+      }, // especial
+      { start: "- ", end: "" },
+      { start: "> ", end: "" },
+    ];
+    let md = list[$(this).index()];
+    try {
+      md.addImg ? md.addImg() : editText($("#edit")[0], md.start, md.end);
+    } catch {
+      alert("vou usar essa parte para executar a previw");
+    }
+  });
+});