- <!DOCTYPE html>
- <HTML>
- <body>
- <p id="p1">
- start stop speed start speed velociting start
- </p>
- <button onclick="myFunction()">
- Try it
- </button>
- <p id="demo">
- </p>
- <script>
- function myFunction() {
- var str = "start stop speed start speed velociting start";
- var pos = str.indexOf("start");
- var time = 0;
- var sp = str.indexOf("start");
- while (sp != -1) {
- sp = str.indexOf("start", sp);
- if (sp != -1) {
- time++;
- sp++;
- }
- }
- document.getElementById("demo").innerHTML = pos;
- document.getElementById("demo").innerHTML = time;
- } < p > Hello world ! </p>
- var x=document.getElementsByTagName("p");
- document.getElementById("p1").innerHTML='The ....is'+x[0].innerHTML;
- /
- </script>
- </body>
- </HTML>
来源: http://www.bubuko.com/infodetail-2825111.html