页面内查找

你可以输入'脚本'查查看 查找页面中的字符 <script language="JavaScript"> var NS4 = (document.layers);    // Which browser? var IE4 = (document.all); var win = window;    // window to search. var n   = 0; function findInPage(str) {   var txt, i, found;   if (str == "")     return false;   // Find next occurance of the given string on the page, wrap around to the   // start of the page if necessary.   if (NS4) {     // Look for match starting at the current point. If not found, rewind     // back to the first match.     if (!win.find(str))       while(win.find(str, false, true))         n++;     else       n++;     // If not found in either direction, give message.     if (n == 0)       alert("Not found.");   }   if (IE4) {     txt = win.document.body.createTextRange();     // Find the nth match from the top of the page.     for (i = 0; i <= n &amp;&amp; (found = txt.findText(str)) != false; i++) {       txt.moveStart("character", 1);       txt.moveEnd("textedit");     }     // If found, mark it and scroll it into view.     if (found) {       txt.moveStart("character", -1);       txt.findText(str);       txt.select();       txt.scrollIntoView();       n++;     }     // Otherwise, start over at the top of the page and find first match.     else {       if (n > 0) {         n = 0;         findInPage(str);       }       // Not found anywhere, give message.       else         alert("Not found.");     }   }   return false; } </script> <form name="search" onSubmit="return findInPage(this.string.value);"> <font size=3><input name="string" type="text" size=15 onChange="n = 0;"></font> <input type="submit" value="Find"> </form>