搜索页面内容+定位滚动条
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("没有找到你要的内容！"); } if (IE4) { txt = win.document.body.createTextRange(); // Find the nth match from the top of the page.for (i = 0; i <= n && (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("没有找到你要的内容！"); } }return false;}<form name="search" ><input name="string" type="text" size=15 onChange="n = 0;" value="生萝卜"><input type="submit" value="页面内搜索"></form>
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