笔记
判断是否有/n回车符,是否把/n替换成空字符
- <script language=javascript>
- var aStr = "我的字符串1\n\n\n\n我的字符串2\n"
- alert(aStr)
- re=/(\n(?=(\n+)))+/g
- var str=aStr.replace(re,"")
- alert(str)
- </script>
js如何分割字符串
var ss = new Array();
var str="123,4567,89,0";
ss = str.split(",");
for(i=0;i<ss.length;i++){
document.write (ss[i]);
}
js获取input文本框值的4种方法
<FORM NAME="form1">
姓名:
<INPUT TYPE="text" NAME="name" value="刘强">
<BR>
电话:
<INPUT TYPE="text" NAME="tel" value="88166289">
<BR>
</FORM>
<script language="javascript">
document.writeln(document.forms[0].tel.value);
document.writeln(document.form1.tel.value);
document.writeln(document.forms[0].elements[1].value);
document.writeln(document.form1.elements[1].value);
</script>
JS给Input文本框赋值怎么写
<input type="text" id="example" />
document.getElementById("example").value="somethind";
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