本文实例讲述了javascript格式化json显示方法。分享给大家供大家参考。具体分析如下:
将json对象或者json字符串格式化方便在网页上限制
var formatJson = function(json, options) { var reg = null, formatted = "", pad = 0, PADDING = "";//one can also use " " or a different number of spaces // optional settings options = options || {}; // remove newline where "{" or "[" follows ":" options.newlineAfterColonIfBeforeBraceOrBracket = (options.newlineAfterColonIfBeforeBraceOrBracket === true) ? true : false; // use a space after a colon options.spaceAfterColon = (options.spaceAfterColon === false) ? false : true; // begin formatting... if (typeof json !== "string") { // make sure we start with the JSON as a string json = JSON.stringify(json); } else { // is already a string, so parse and re-stringify //in order to remove extra whitespace json = JSON.parse(json); json = JSON.stringify(json); } // add newline before and after curly braces reg = /([{}])/g; json = json.replace(reg, "
$1
"); // add newline before and after square brackets reg = /([[]])/g; json = json.replace(reg, "
$1
"); // add newline after comma reg = /(,)/g; json = json.replace(reg, "$1
"); // remove multiple newlines reg = /(
)/g; json = json.replace(reg, "
"); // remove newlines before commas reg = /
,/g; json = json.replace(reg, ","); // optional formatting... if (!options.newlineAfterColonIfBeforeBraceOrBracket) {reg = /:
{/g; json = json.replace(reg, ":{"); reg = /:
[/g; json = json.replace(reg, ":["); } if (options.spaceAfterColon) { reg = /:/g; json = json.replace(reg, ": "); } $.each(json.split("
"), function(index, node) { var i = 0,indent = 0,padding = ""; if (node.match(/{$/) || node.match(/[$/)) {indent = 1; } else if (node.match(/}/) || node.match(/]/)) {if (pad !== 0) {pad -= 1;} } else {indent = 0; } for (i = 0; i < pad; i++) {padding += PADDING; } formatted += padding + node + "
"; pad += indent; }); return formatted;};关于json格式化感兴趣的朋友还可参考在线工具:
JSON代码工具
希望本文所述对大家的javascript程序设计有所帮助。