Different types of cycles
JavaScript support different types of loops:
- for - multiple passes through the block
- for / in - traverse the object properties
- while - when the specified condition is true when a code block cyclic
- do / while - when a specified condition is true when a code block cyclic
== Look For / In cycle ==
<!DOCTYPE html>
<html>
<body>
<h1>JavaScript 循环</h1>
<p>for/in 语句循环遍历对象的属性。</p>
<p id="demo"></p>
<script>
var txt = "";
var person = {fname:"Bill", lname:"Gates", age:62};
var x;
for (x in person) {
txt += person[x] + " ";
}
document.getElementById("demo").innerHTML = txt;
</script>
</body>
</html>result:
Javascript 循环
for/in 语句循环遍历对象的属性。
Bill Gates 62