金莎网

Js实现 clrt+f

2024-3-29 金莎网 JavaScript

```javascript
<script type="text/javascript">       
        var DOM = (document.getElementById) ? 1 : 0;
        var NS4 = (document.layers) ? 1 : 0;
        var IE4 = 0; if (document.all) { IE4 = 1; DOM = 0; }
        var win = window;
        var n = 0;
        function findIt() {
            if (document.getElementById("searchstr").value != "")
                findInPage(document.getElementById("searchstr").value);
        }
        function findInPage(str) {
            var txt, i, found;
            if (str == "")
                return false;
            if (DOM) {
                win.find(str, false, true);
                return true;
            }
            if (NS4) {
                if (!win.find(str))
                    while (win.find(str, false, true))
                        n++;
                else
                    n++;
                if (n == 0)
                    alert("未找到指定内容.");
            }
            if (IE4) {
                txt = win.document.body.createTextRange();
                for (i = 0; i <= n && (found = txt.findText(str)) != false; i++) { txt.moveStart("character", 1); txt.moveEnd("textedit"); } if (found) { txt.moveStart("character", -1); txt.findText(str); txt.select(); txt.scrollIntoView(); n++; } else { if (n > 0) {
                        n = 0;
                        findInPage(str);
                    } else
                        alert("未找到指定内容.");
                }
            }
            return false;
        }    
    </script>
<input type="text" class="edit_seachrTxt" id="searchstr" name="searchstr" /> <label class="lableBtn"><input type="button" class="edit_seachrBtn" value="查找并选择" onclick="javascript:findIt()" /></label> ```