tryjs_string_search 在线代码实例

 <p>搜索字符串 "W3cSchool", 并显示匹配的起始位置：</p>
<button onclick="myFunction()">点我</button>
<p id="demo"></p>
<script>
function myFunction() {
    var str = "Visit W3cSchool!"; 
    var n = str.search("W3cSchool");
    document.getElementById("demo").innerHTML = n;
}
</script>