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In JavaScript, while means "when...the condition is met". It is a loop statement with the syntax of "while (condition) {code block to be executed}"; when the specified condition is true , the while loop will continue to execute the code block in "{}".
The operating environment of this tutorial: Windows 10 system, JavaScript version 1.8.5, Dell G3 computer.
What does while mean in JavaScript
In JavaScript, the meaning of while is "when...", "when... is satisfied. ..conditions”. Is a loop statement, the while loop will continue to loop through the code block as long as the specified condition is true.
The syntax is as follows:
while (条件) {要执行的代码块}The example is as follows:
<html>
<body>
<h2>JavaScript while</h2>
<p id="demo"></p>
<script>
var text = "";
var i = 0;
while (i < 10) {
text += "<br>数字是 " + i;
i++;
}
document.getElementById("demo").innerHTML = text;
</script>
</body>
</html>Output result:
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