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<html><head><meta charset="UTF-8"><title></title></head><body><input id="ji" /><input type="button" value="提交" onclick="d()"/><input type="password" id="password"/><input type="button" value="提交" onclick="d1()"/><textarea id="ta"></textarea><input type="button" value="提交" onclick="d2()"/><input type="hidden" id="t"/><input type="button" value="提交" onclick="d3()"/><script>/*文本框*/document.getElementById("ji").focus();function d(){var element = document.getElementById("ji");console.log(element.value) ;element.value = "jim";element.readOnly = true;element.disabled = true;}/*密码框*/document.getElementById("password").focus();function d1(){var element = document.getElementById("password");console.log(element.value) ;element.value = "hao";element.readOnly = true;/*只读，不可编辑，可以在Sevelet获取*/element.disabled = true;/*不可编辑，不可以在Sevelet获取*/}/*文本域*/document.getElementById("ta").focus();function d2(){var element = document.getElementById("ta");console.log(element.value) ;element.value = "hao";element.readOnly = true;element.disabled = true;}/*隐藏框，且没有focus()，与readOnly方法*/function d3(){var element = document.getElementById("t");console.log(element.value) ;element.value = "hao";}</script><!--单选框--><input type="radio" name="sex" value="0"/>女<input type="radio" name="sex" value="1"/>男<input type="button" value="提交" onclick="t1()"/><script>function t1(){var elements = document.getElementsByName("sex");/*多个用复数，下同*/for(var i=0;i<elements.length;i++){var element = elements[i];console.log(element.checked+","+element.value);}}document.getElementsByName("sex")[1].checked = true;document.getElementsByName("sex")[0].disabled = true;</script><!--复选框--><input type="checkbox" name="hobby" value="0"/>篮球<input type="checkbox" name="hobby" value="1"/>足球<input type="checkbox" name="hobby" value="2"/>乒乓球<input type="button" value="提交" onclick="t2()"/><script>function t2(){var elements = document.getElementsByName("hobby");for(var i=0;i<elements.length;i++){var element = elements[i];console.log(element.checked+","+element.value);}}document.getElementsByName("hobby")[1].checked = true;document.getElementsByName("hobby")[0].disabled = true;</script><!--下拉框--><select id="province"><option value="">--请选择--</option><option value="1">河南省</option><option value="2">河北省</option><option value="3">湖北省</option></select><input type="button" value="提交" onclick="t3()"/><script>function t3(){var element = document.getElementById("province");var options = element.options;for(var i=0;i<options.length;i++){var option = options[i];console.log(option.selected+","+option.value);}}document.getElementById("province").options[2].selected = true;document.getElementById("province").options[1].disabled = true;</script></body>
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