代码收藏 JS实现页内查找定位功能

前部分为IE下搜索方法 用TextRange来实现

后部分为firefox、chrome下搜索方法

 1         var nextIndex = 0;

 2         var searchValue = '';

 3         var input1=document.getElementById('input1');

 4 

 5         function findInPage(searchText) {

 6             if (!searchText){

 7                 alert('搜索字符串为空');

 8             }

 9 

10             if(searchText && searchText != searchValue && nextIndex > 0){

11                 searchValue = searchText;

12                 nextIndex = 0;

13             }else{

14                 searchValue = searchText;

15             }

16 

17             if (document.all) {

18                 txt = document.body.createTextRange();

19                 var found =false;

20                 for (var i = 0; i <= nextIndex && (found = txt.findText(searchValue))==true; i++) {

21                     txt.moveStart("character", 1);

22                     txt.moveEnd("textedit");

23                 }

24 

25                 if (found) {

26                     txt.moveStart("character",-1);

27                     txt.findText(searchValue);

28                     txt.select();

29                     txt.scrollIntoView();

30                     nextIndex++;

31                 }else{

32                     if (nextIndex > 0) {

33                         nextIndex = 0;

34                         findInPage(searchValue);

35                     }

36                 }

37             }else{

38                 window.find(searchValue,false,true);

39             }

40         }