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Use js to implement an editable select drop-down list_javascript skills

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WBOYOriginal
2016-05-16 16:58:541141browse
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<script> <br>function clearSelect(obj,e) <br>{ <br>opt = obj.options[0] ; <br>opt.selected = "selected"; <br>if((e.keyCode== 8) ||(e.charCode==8))//Use the backspace key to delete word by word Edit function <br>{ <br>opt.value = opt.value.substring(0, opt.value.length>0?opt.value.length-1:0); <br>opt.text = opt.value ; <br>} <br>if((e.keyCode== 46) ||(e.charCode==46))//Use the Delete key to implement the editing function of verbatim deletion<br>{ <br>opt.value = ""; <br>opt.text = opt.value; <br>} <br>//You can also implement other key press responses<br>} <br><br>function writeSelect(obj, e) <br>{ <br>opt = obj.options[0]; <br>opt.selected = "selected"; <br>opt.value = String.fromCharCode(e.charCode||e.keyCode); <br>opt.text = opt.value; <br>} <br>function forbidBackSpace()//In order to avoid the backspace return to the previous page function in IE, which conflicts with the editing function of this drop-down box, it needs to be disabled backspace function. forbidBackSpace can be written in <body onkeydown="forbidBackSpace();">. <br>{ <br>if((event.keyCode == 8) && (event.srcElement.type != "text" && event.srcElement.type != "textarea" && event.srcElement.type != "password ")) <br>{ <br>event.keyCode = 0; <br>event.returnValue = false; <br>} <br>} <br></script>
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