add variable

CodeCoderCoding · CodeCoderCoding · commit ee379c2cc42f · 2022-10-06T21:48:38.000+08:00
diff --git a/ECMAScript/A01-Variable/bool.js b/ECMAScript/A01-Variable/bool.js
@@ -0,0 +1 @@
+let bool=true;
diff --git a/ECMAScript/A01-Variable/const.js b/ECMAScript/A01-Variable/const.js
@@ -0,0 +1,7 @@
+const constVariable=1;
+function constFunction(){
+    const constVariableInFunction=2;
+    console.log(constVariable);
+}
+constFunction();
+//console.log(constVariableInFunction);
diff --git a/ECMAScript/A01-Variable/let.js b/ECMAScript/A01-Variable/let.js
@@ -0,0 +1,8 @@
+//在ES6及之后，变量是通过let关键字声明的
+let letVariable=1;
+function letFunction(){
+    let letVariableInFunction=2;
+    console.log(letVariable);
+}
+letFunction();
+console.log(letVariableInFunction);
diff --git a/ECMAScript/A01-Variable/null.js b/ECMAScript/A01-Variable/null.js
@@ -0,0 +1 @@
+let variable=null;
diff --git a/ECMAScript/A01-Variable/number.js b/ECMAScript/A01-Variable/number.js
@@ -0,0 +1 @@
+let number=1;
diff --git a/ECMAScript/A01-Variable/string.js b/ECMAScript/A01-Variable/string.js
@@ -0,0 +1 @@
+let string="hello";
diff --git a/ECMAScript/A01-Variable/var.js b/ECMAScript/A01-Variable/var.js
@@ -0,0 +1,8 @@
+//在ES6之前，变量是通过let关键字声明的
+var varVariable=1;
+function varFunction(){
+    var varVariableInFunction=2;
+    console.log(varVariable);
+}
+varFunction();
+//console.log(varVariableInFunction);
