val = "123456"var isnum = /^\d+$/.test(val);document.write(isnum);document.write("<br>"); val ...
val = "123456"var isnum = /^\d+$/.test(val);document.write(isnum);document.write("<br>"); val ...
JS判断字符串是否全部为数字 val = "123456" var isnum = /^\d+$/.test(val); val = "1232232" var isnum ; var reg = /^[0-9]+.?[0-9]*$/ isnum = reg.test ...
var p = /[0-9]/; var b = p.test(string);//true,说明有数字var p = /[a-z]/i; var b = p.test(string);//true,说明有英文字母var p = /[0-9a-z]/i; var b = p.test(string ...
function checkStrIsLetter($str){ $letteraArr = array("a","b","c","d","e","f","g","h","i","j","k ...
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function hasLetter(str) { for (var i in str) { var asc = st ...
<p> 使用正则表达式的方式来判断。 </p> 结果: 使用正则表达式的方式来判断。 truefalse ...
1、使用js判断字符串是否包含数字,英文字母,汉字String str = "这是字符串";1>var a = /[0-9]/; var b = a.test(str);//true,说明有数字2>var a = /[a-z]/i; var b = a.test(str);//true ...