标签 JS 下的文章

JS - 字符串指定位置添加元素

/* 
 * str1:原字符串
 * n:插入位置
 * str2:插入元素
 */
function insertStr(str1, n, str2){
    var s1 = '';
    var s2 = '';
    if(str1.length<n){
        return str1 + str2;
    }else{
        s1 = str1.substring(0, n);
        s2 = str1.substring(n, str1.length);
        return s1 + str2 + s2;
    }
}

JS - 字符串显示相应长度

/* 
 * str:字符串
 * num:显示位数
 */
function opStr(str, num){
    var str1 = str;
    var str2 = '';
    if(str1.length>num){
        str2 = str1.substring(0, num) + '..';
    }else{
    str2 = str1;
    }
    return str2;
}

CSS, JS - version

<link 
    rel="stylesheet" 
    href="../resources/css/style.css?version=<?php echo filemtime('../resources/js/login.php.js');?>">
<script 
    type="text/javascript" 
    src="../resources/js/login.php.js?version=<?php echo filemtime('../resources/js/login.php.js)';?>">
</script>

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PHP - JS - JSON

php array 轉 json

$json = json_encode($array);

js json 轉 string

var json;
var str = JSON.stringify(json);